VMO Invesco Municipal Opportunity Trust

Van Kampen Funds Inc., a subsidiary of Van Kampen Investments Inc. (�Van Kampen�), will hold one of an ongoing series of portfolio update conference calls on Thursday, March 27, 2008 at 4:15 p.m. Eastern Time. Portfolio Managers will discuss the Van Kampen Municipal Opportunities Trust (NYSE: VMO) and give insight into the senior loan marketplace. The call is open to the general public. The U.S. domestic call-in number is (800) 230-1951. Van Kampen Asset Management, the Fund�s investment adviser, is a wholly owned subsidiary of Van Kampen. Van Kampen is one of the nation�s largest investment management companies, with approximately $120 billion in assets under management or supervision, as of November 30, 2007. With roots in money management dating back to 1927, Van Kampen has helped nearly four generations of investors achieve their financial goals. For more information, visit Van Kampen�s website at www.vankampen.com. Investing in closed-end funds involves risk and it is possible to lose money on any closed-end fund investment. Copyright �2008 Van Kampen Funds Inc. All Rights Reserved. Member FINRA/SIPC. IU08-01868P-N03/08