VAN KAMPEN HIGH YIELD FUND

                    SUPPLEMENT DATED NOVEMBER 2, 2007 TO THE
                           CLASS I SHARES PROSPECTUS
                            DATED DECEMBER 29, 2006,
                   AS PREVIOUSLY SUPPLEMENTED ON JUNE 1, 2007

     In the section entitled "PURCHASE OF SHARES -- GENERAL," the first
paragraph is hereby deleted and replaced with the following:

     This Prospectus offers Class I Shares of the Fund. Class I Shares are
     offered without any sales charges on purchases or sales and without any
     distribution (12b-1) fee and service fee. Class I Shares are available for
     purchase exclusively by (i) tax-exempt retirement plans with assets of at
     least one million dollars (including 401(k) plans, 457 plans, employer-
     sponsored 403(b) plans, profit sharing and money purchase plans, defined
     benefit plans and non-qualified deferred compensation plans), (ii) fee-
     based investment programs with assets of at least one million dollars,
     (iii) qualified state tuition plan (529 plan) accounts, (iv) institutional
     clients with assets of at least one million dollars and (v) certain Van
     Kampen investment companies.

               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE

                                                                   HYISPTI 11/07