As filed pursuant to
                                                   Rule 424 (B)(3) under the
                                                   Securities Act of 1933
                                                   Registration No. 333-102092



                     ANCHOR NATIONAL LIFE INSURANCE COMPANY
                            VARIABLE SEPARATE ACCOUNT

    (PORTION RELATING TO THE WM DIVERSIFIED STRATEGIES III VARIABLE ANNUITY)

                 SUPPLEMENT TO THE WM DIVERSIFIED STRATEGIES III
                       PROSPECTUS DATED DECEMBER 30, 2002

Effective March 1, 2003, Anchor National Life Insurance Company will begin doing
business under its new name, AIG SunAmerica Life Assurance Company. Please see
the first paragraph on page 2 of your prospectus for additional information
regarding the name change.

THE FOLLOWING SUPPLEMENTS ANY DISCUSSION PERTAINING TO THE 1-YEAR AND 3-YEAR
FIXED ACCOUNT OPTION IN THE PROSPECTUS:

      If your contract was issued on or after February 12, 2003, you may not
      allocate any Purchase Payments to or transfer into the 1-year and 3-year
      fixed account options. This restriction may not apply in certain states.
      In addition, the Principal Advantage Program is not available to you.







Date: February 12, 2003


                Please keep this Supplement with your Prospectus.

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