UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13D
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                               (AMENDMENT NO. 1)*


                          COMPUTER SCIENCES CORPORATION
                                (Name of Issuer)

                                  COMMON SHARES
                         (Title of Class of Securities)

                                    205363104
                                 (CUSIP Number)

                                DECEMBER 3, 2004
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of ss.ss.240.13d-1(e),  240.13d-1(f) or 240.13d-1(g), check the
following box. [ ]

NOTE:  Schedules  filed in paper format shall include a signed original and five
copies of the  schedule,  including  all exhibits.  See  ss.240.13d-7  for other
parties to whom copies are to be sent.

     *The  remainder  of this cover  page  shall be filled  out for a  reporting
person's  initial  filing on this  form with  respect  to the  subject  class of
securities,  and for any subsequent amendment containing information which would
alter disclosures provided in a prior cover page.

     The  information  required on the remainder of this cover page shall not be
deemed to be "filed"  for the purpose of Section 18 of the  Securities  Exchange
Act of 1934 ("Act") or otherwise  subject to the  liabilities of that section of
the Act but shall be subject to all other  provisions of the Act  (however,  see
the Notes).



                                  SCHEDULE 13D

------------------- ------------------------------------------ -----------------
CUSIP No. 205363104                                            Page 2 of 9 pages
------------------- ------------------------------------------ -----------------
--------------------------------------------------------------------------------

  1     Name of Reporting Persons
        I.R.S. Identification Nos. of Above Persons (entities only)

        DST Systems, Inc.           43-1581814
------ -------------------------------------------------------------------------
  2     Check the Appropriate Box if a Member of a Group              (a) [ ]
                                                                      (b) [ ]
------ -------------------------------------------------------------------------
  3     SEC Use Only
------ -------------------------------------------------------------------------
  4     Source of Funds                                                Not
                                                                   applicable
------ -------------------------------------------------------------------------
  5     Check if Disclosure of Legal Proceedings is Required Pursuant to
        Items 2(d) or 2(e)                                                [ ]
------ -------------------------------------------------------------------------
  6     Citizenship or Place of Organization                         Delaware
--------------------------------------------------------------------------------
  Number of           7          Sole Voting Power               0
   Shares        -----------  -------------------------------------------------
Beneficially          8          Shared Voting Power             0
  Owned by       -----------  --------------------------------------------------
    Each              9          Sole Dispositive Power          0
  Reporting      -----------  --------------------------------------------------
Person With          10          Shared Dispositive Power        0
--------------------------------------------------------------------------------
  11    Aggregate Amount Beneficially Owned by Each Reporting Person
                                 7,632,343
------ -------------------------------------------------------------------------
  12    Check if the Aggregate Amount in Row (11) Excludes Certain Shares [ ]
------ -------------------------------------------------------------------------
  13    Percent of Class Represented by Amount in Row (11)              4.03%
------ -------------------------------------------------------------------------
  14    Type of Reporting Person                                           CO
------ -------------------------------------------------------------------------




------------------- ------------------------------------------ -----------------
CUSIP No. 205363104                                            Page 3 of 9 pages
------------------- ------------------------------------------ -----------------
--------------------------------------------------------------------------------

  1     Name of Reporting Persons
        I.R.S. Identification Nos. of Above Persons (entities only)

        West Side Investments, Inc.           88-0385546
------ -------------------------------------------------------------------------
  2     Check the Appropriate Box if a Member of a Group              (a) [ ]
                                                                      (b) [ ]
------ -------------------------------------------------------------------------
  3     SEC Use Only
------ -------------------------------------------------------------------------
  4     Source of Funds                                                Not
                                                                   applicable
------ -------------------------------------------------------------------------
  5     Check if Disclosure of Legal Proceedings is Required Pursuant to
        Items 2(d) or 2(e)                                                [ ]
------ -------------------------------------------------------------------------
  6     Citizenship or Place of Organization                           Nevada
--------------------------------------------------------------------------------
  Number of           7          Sole Voting Power                  7,632,343
   Shares        -----------  -------------------------------------------------
Beneficially          8          Shared Voting Power                        0
  Owned by       -----------  --------------------------------------------------
    Each              9          Sole Dispositive Power             7,632,343
  Reporting      -----------  --------------------------------------------------
Person With          10          Shared Dispositive Power                   0
--------------------------------------------------------------------------------
  11    Aggregate Amount Beneficially Owned by Each Reporting Person
                                 7,632,343
------ -------------------------------------------------------------------------
  12    Check if the Aggregate Amount in Row (11) Excludes Certain Shares [ ]
------ -------------------------------------------------------------------------
  13    Percent of Class Represented by Amount in Row (11)              4.03%
------ -------------------------------------------------------------------------
  14    Type of Reporting Person                                           CO
------ -------------------------------------------------------------------------



CUSIP No. 205363104                                            Page 4 of 9 pages


     This  Amendment No. 1 (this  "Amendment")  amends the Schedule 13D filed by
DST Systems,  Inc. ("DST") on August 12, 1996 (the "Schedule 13D"), and is being
filed  on  behalf  of DST and  West  Side  Investments,  Inc.,  a  wholly  owned
subsidiary of DST ("West Side" and together with DST, the "Reporting  Persons").
This Amendment relates to the common stock of Computer Sciences  Corporation , a
Nevada corporation  ("Issuer" or "CSC"). This Amendment is being filed to report
the sale of covered  call  options  pursuant  to Item 6 and to report a decrease
below 5% of the  beneficial  ownership  of such  common  stock by the  Reporting
Persons.  The Reporting Persons' ownership of such common stock fell below 5% as
a result of issuances of  additional  shares of common stock by the Issuer,  and
not as a result of any transactions by the Reporting Persons.

ITEM 1. SECURITY AND ISSUER

     The class of equity  securities  to which this  Schedule 13D relates is the
CSC common stock, $1.00 par value per share ("CSC Common Stock"), of Issuer. The
principal  executive offices of Issuer are located at 2100 East Grand Avenue, El
Segundo, California 90245.

ITEM 2. IDENTITY AND BACKGROUND

     This  Amendment  is being  filed on  behalf  of DST and West  Side.  DST is
organized as a Delaware  corporation.  The principal  executive office of DST is
333 West 11th Street,  Kansas City,  Missouri 64105. West Side is organized as a
Nevada  corporation.  The principal executive office of West Side is 6100 Elton,
Suite 1000, Las Vegas, Nevada 89107.

     DST provides  sophisticated  information  processing and computer  software
services and  products to the  financial  services  industry  (primarily  mutual
funds,  corporations  and  investment  managers),  video/broadband/satellite  TV
industry, communications industry and other service industries.

     West Side, a wholly owned  subsidiary of DST,  holds  investments in equity
securities and certain financial interests included as part of DST's Investments
and Other segment.

     None  of DST,  West  Side  and  their  respective  executive  officers  and
directors  hereinafter listed has, during the last five years, been convicted in
a criminal proceeding  (excluding traffic violations or similar misdemeanors) or
been a party to a civil  proceeding  of a  judicial  or  administrative  body of
competent jurisdiction resulting in a judgment,  decree or final order enjoining
future violations of, or prohibiting or mandating activities subject to, federal
or state securities laws or finding any violation with respect to such laws.

     Each of the  executive  officers  and  directors  whose names and  business
addresses appear below is a U.S.  citizen and is principally  employed by DST or
its  affiliates  (including  West  Side)  in the  capacities  shown,  except  as
indicated otherwise.  The business address of such officers and directors of DST
is 333 West 11th Street,  Kansas City,  Missouri 64105.  The business address of
such officers and directors of West Side is 6100 Elton,  Suite 1000,  Las Vegas,
Nevada 89107.



CUSIP No. 205363104                                            Page 5 of 9 pages



                                                  

DST EXECUTIVE OFFICERS
Name                                                 Office
----                                                 ------
Thomas A. McDonnell                                  President and Chief Executive Officer
Thomas A. McCullough                                 Executive Vice President and Chief Operating Officer
Donald J. Kenney                                     President and Chief Executive Officer of EquiServe, Inc.
J. Michael Winn                                      Managing Director of DST International Limited, United
                                                     Kingdom - Not a U.S. citizen
Peter J. Nault                                       President of DST Innovis, Inc.
Jonathan J. Boehm                                    Group Vice President
Kenneth V. Hager                                     Vice President and Chief Financial Officer
Robert L. Tritt                                      Group Vice President
Randall D. Young                                     Vice President, General Counsel and Secretary
Steven J. Towle                                      President and Chief Executive Officer of DST Output, LLC

DST DIRECTORS
Name                                                 Office
----                                                 ------
Thomas A. McDonnell                                  President and Chief Executive Officer
Thomas A. McCullough                                 Executive Vice President and Chief Operating Officer
A. Edward Allinson                                   Retired
Michael G. Fitt                                      Retired
William C. Nelson                                    Chairman of the Board of George K. Baum Asset Management
M. Jeannine Strandjord                               Senior Vice President - Chief Integration Officer of Sprint
                                                     Corporation
Travis E. Reed                                       President of Reed Investment Corporation

WEST SIDE EXECUTIVE OFFICERS
Name                                                 Office
----                                                 ------
Gerard M. Lavin                                      President of West Side; Vice Presdient of DST
Kenneth V. Hager                                     Treasurer and Secretary of West Side; Vice President and Chief
                                                     Financial Officer of DST
Gregg Wm. Givens                                     Assistant Treasurer of West Side; Vice President and Chief
                                                     Accounting Officer of DST
Kenneth A. Woloson                                   Assistant Secretary of West Side; Partner at law firm of Haney,
                                                     Woloson & Mullins

WEST SIDE DIRECTORS
Name                                                 Office
----                                                 ------
Gerard M. Lavin                                      President of West Side; Vice President of DST
Kenneth V. Hager                                     Vice President and Chief Financial Officer of DST;
                                                     Treasurer and Secretary of West Side
A. Somer Hollingsworth                               President and Chief Executive Officer of Nevada Development
                                                     Authority
Robert H. Perkins                                    Manager and Chief Executive Officer of Perkins, Wolf,
                                                     McDonnell and Company, LLC, a registered investment adviser
John Beuchat                                         Retired President of Outwest Meat Company






CUSIP No. 205363104                                            Page 6 of 9 pages


ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION

     DST acquired CSC Common Stock as a result of a merger between The Continuum
Company, Inc. and a wholly-owned subsidiary of Issuer (the "Merger"). The Merger
is  described  in the proxy  statement/prospectus  contained in the Form S-4, as
amended,  filed by  Issuer  as of June 10,  1996,  and in the Form 8-K  filed by
Issuer as of August 1, 1996.

     DST transferred its CSC Common Stock to West Side as a capital contribution
to West Side.

ITEM 4. PURPOSE OF TRANSACTION

     West Side holds CSC Common Stock for investment  purposes,  but it reserves
the right to exercise  any and all rights and  privileges  as a  stockholder  of
Issuer in a manner  consistent with its best interests,  to purchase or sell CSC
Common Stock or other securities of Issuer,  and to communicate with management,
stockholders of Issuer or others and/or to participate, alone or with others, in
various plans, proposals or transactions respecting Issuer or its securities.

     Except as set forth above,  and in the Schedule 13D, the Reporting  Persons
do not have any present plans or proposals that relate to or would result in any
of the actions  required to be described in paragraphs (a) through (j) of Item 4
of Schedule  13D.  Each of the  Reporting  Persons  may, at any time,  review or
reconsider  its  position  with  respect to the Issuer  and  formulate  plans or
proposals with respect to any of such matters,  but has no present  intention of
doing so.

ITEM 5. INTEREST IN SECURITIES OF THE ISSUER

     (a) As of the date of this Amendment, West Side beneficially owns 7,632,343
shares of CSC Common Stock. West Side has sole voting and dispositive power over
such holdings.  These shares  represent 4.03% of the  189,260,915  shares of CSC
Common  Stock  outstanding  at October  22,  2004 as  reported  in the  Issuer's
quarterly  report on Form 10-Q for the fiscal quarter ended October 1, 2004. DST
may be deemed to beneficially own these securities because West Side is a wholly
owned  subsidiary of DST. DST appoints the board of directors of West Side.  The
officers of West Side vote and make  decisions  with respect to  disposition  of
such shares of CSC Common  Stock,  subject to oversight of the board.  Thomas A.
McDonnell,  the President,  Chief Executive  Officer and a director of DST, owns
24,016  shares of CSC Common  Stock.  Kenneth V. Hager,  the Vice  President and
Chief  Financial  Officer of DST and the Treasurer,  Secretary and a director of
West Side, owns 1,000 shares of CSC Common Stock.

     (b) West Side has the sole voting and dispositive  power over the 7,632,343
shares of CSC  Common  Stock held by West  Side.  Although  DST may be deemed to
beneficially own these shares, DST does not have either sole or shared voting or
dispositive power over such shares.  DST, as sole shareholder,  elects the board
of directors of West Side. Messrs.  McDonnell and Hager have the sole voting and
dispositive power over their respective  beneficially owned shares of CSC Common
Stock.

     (c) The  following  table sets forth  certain  information  with respect to
transactions by West Side in the CSC Common Stock during the past sixty days.



CUSIP No. 205363104                                            Page 7 of 9 pages


Date               Transaction          Shares            Price Per Share
------------------ -------------------- ----------------- --------------------

11/16/04           SELL                   5,100           $54.7500
------------------ -------------------- ----------------- --------------------
11/17/04           SELL                 100,000           $54.6000
------------------ -------------------- ----------------- --------------------
11/22/04           SELL                 200,000           $52.8620
------------------ -------------------- ----------------- --------------------
11/23/04           SELL                 194,900           $52.9930
------------------ -------------------- ----------------- --------------------
11/29/04           SELL                 125,000           $53.0980
------------------ -------------------- ----------------- --------------------
11/30/04           SELL                 375,000           $53.7200
------------------ -------------------- ----------------- --------------------

------------------ -------------------- ----------------- --------------------
12/3/04            COVERED CALL (1)      62,000           $  2.500
------------------ -------------------- ----------------- --------------------
12/3/04            COVERED CALL (1)      38,000           $  2.550
------------------ -------------------- ----------------- --------------------
12/3/04            COVERED CALL (2)     100,000           $  4.700
------------------ -------------------- ----------------- --------------------

(1)  Call at $60.00 per share expiring 6/18/2005; price per share shown in table
     is sale price of call per share covered.
(2)  Call at $60.00 per share expiring 1/21/2006; price per share shown in table
     is sale price of call per share covered.

     None of the above  transactions,  either  individually or in the aggregate,
amounted to a disposition of 1% or greater.

     Except as set  forth  above,  during  the last  sixty  days  there  were no
transactions in the CSC Common Stock effected by the Reporting Persons,  nor, to
the best of their knowledge, any of their directors or executive officers.

     (d)  Except  as set  forth in this  Item 5, no  person is known to have the
right to receive or the power to direct the receipt of  dividends  from,  or the
proceeds from the sale of, the shares of CSC Common Stock  beneficially owned by
the Reporting Persons.

     (e) The Reporting  Persons ceased being the beneficial  owners of more than
5% of the Issuer in 2002 as a result of  issuances of  additional  shares of CSC
Common  Stock by the  Issuer,  and not as a result  of any  transactions  by the
Reporting Persons.

ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO
        SECURITIES OF THE ISSUER

     Pursuant to Rule 13d-1(k) promulgated under the Exchange Act, the Reporting
Persons have entered into an agreement  with respect to the joint filing of this
statement, and any amendment or amendments hereto.

     West Side sold  covered  call  options on a total of 200,000  shares of CSC
Common Stock on the Chicago  Board  Options  Exchange on December 3, 2004 in the
amounts and prices as indicated in the table set forth in Item 5(c) above.

     Except  as  set  forth  herein,  there  are  no  contracts,   arrangements,
understandings  or  relationships  among the persons  named in Item 2 or between
such persons and any other person with respect to any securities of the Issuer.



CUSIP No. 205363104                                            Page 8 of 9 pages

ITEM 7. MATERIAL TO BE FILED AS EXHIBITS

     1.   Joint Filing Agreement,  dated as of December 17, 2004, by and between
          the Reporting Persons.



CUSIP No. 205363104                                            Page 9 of 9 pages


                                   SIGNATURES

     After  reasonable  inquiry and to the best of my  knowledge  and belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.



Dated: December 17, 2004



DST SYSTEMS, INC.


By:    /s/ Randall D. Young
       ------------------------------
       Name:  Randall D. Young
       Title: Vice President and General Counsel


WEST SIDE INVESTMENTS, INC.


By:    /s/ Kenneth V. Hager
       ------------------------------
       Name:  Kenneth V. Hager
       Title: Treasurer and Secretary