INSURED MUNICIPALS INCOME TRUST & IN QU TAX EX TR MUL SE 320, 497J, 1999-07-26

INSURED MUNICIPALS INCOME TRUST & IN QU TAX EX TR MUL SE 320
497J, 1999-07-26

Previous: NATIONAL AUTO FINANCE CO INC, PRE 14A, 1999-07-26

Next: VAN KAMPEN AMERICAN CAPITAL EQUITY OPPORTUNITY TRUST SER 56, 485BPOS, 1999-07-26





                                  July 26, 1999

Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549-1004
Attn:  Filing Desk, Stop 1-4


Re: Van Kampen Focus Portfolios, Municipal Series 320
(File No. 333-77193) (CIK No. 1024838)
- --------------------------------------------------------------------------------

Gentlemen:

         In accordance with the provisions of Rule 497(j) of Regulation C under
the Securities Act of 1933 (the "Securities Act") this letter serves to certify
that the most recent amendment to the registration statement of Form S-6 for the
above captioned Trust does not differ from that which would have been filed
pursuant to Rule 497(b) of the Securities Act. Amendment No. 1 to the
registration statement, which was the most recent amendment to the registration
statement, was filed electronically with the Commission on July 22, 1999.


                                                               Very truly yours,


                                                           VAN KAMPEN FUNDS INC.