VAN KAMPEN INVESTMENTS
        SHINE



                   NOTICE OF ADJOURNED JOINT SPECIAL MEETING


December 12, 2005

The adjourned joint special meeting of shareholders (the "Meeting") of Van
Kampen Advantage Municipal Income Trust and Van Kampen Municipal Opportunity
Trust (each, a "Fund"), was held on November 22, 2005 and has been further
adjourned to January 11, 2006 to allow additional time to solicit additional
votes in connection with the proposals as outlined in the Notice of Joint
Special Meeting of Shareholders previously mailed to you. The adjourned special
meeting will be held at 10:00 a.m. Central Time on January 11, 2006 at the
offices of Van Kampen Investments Inc., 1 Parkview Plaza, Oakbrook Terrace,
Illinois. 

YOUR VOTE IS IMPORTANT AND YOUR PARTICIPATION IN THE AFFAIRS OF YOUR FUND DOES
MAKE A DIFFERENCE.  

WITH JUST A FEW DAYS REMAINING UNTIL THE ADJOURNED MEETING, YOUR PROMPT
ATTENTION TO CASTING YOUR BALLOT IS APPRECIATED. To record your vote
immediately, you may cast your vote using the Internet or telephone.
Instructions for using either of these expedited voting methods are printed on
the enclosed proxy card. Additionally, the required control number for either
of these methods is printed on the proxy card. If you prefer to vote by mail,
simply complete the enclosed proxy card and return it in the postage paid
envelope provided. 

The purpose of the Meeting is to seek shareholder approval for the
reorganization of Van Kampen Advantage Municipal Income Trust into Van Kampen
Municipal Opportunity Trust (the "Reorganization") and the issuance of
additional common shares of Van Kampen Municipal Opportunity Trust. The
proposed Reorganization seeks to combine similar funds to achieve certain
economies of scale and other operational efficiencies. 

After careful consideration, the Board of Trustees of each Fund has determined
that the Reorganization and the issuance of additional common shares will
benefit the common shareholders of each Fund and recommends that you cast your
vote "FOR" the proposed Reorganization and the issuance of additional common
shares, as applicable. 

If you have any questions, please do not hesitate to contact the Van Kampen
Client Relations Department at 1-800-341-2929.

We appreciate your careful and prompt consideration of this matter.




VAN KAMPEN ADVANTAGE MUNICIPAL INCOME TRUST
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST 

The foregoing does not constitute an offer of any securities for sale. The
joint proxy statement/prospectus relating to the proposed reorganization
contains important information and shareholders are urged to read it. Free
copies of the joint proxy statement/prospectus are available by calling Van
Kampen's Client Relations Department at (800)341-2929 or on the SEC's web site
at www.sec.gov.