July 13, 2006 VIA EDGAR - --------- Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Re: DWS Advisor Funds Securities Act File No. 033-07404, Investment Company Act File No. 811-04760 CIK No: 0000797657 Withdrawal of Post-Effective Amendments Nos. 123, 126, 130, 132, 135 and 140 Ladies and Gentlemen: Pursuant to Rule 477 under the Securities Act of 1933, as amended, DWS Advisor Funds, a Massachusetts business trust (the "Trust"), on behalf of its series, DWS International Equity Fund (the "Fund"), hereby respectfully requests that the following post-effective amendments be withdrawn, and that an order of the Commission granting such withdrawal be included in the Trust's file for the Registration Statement: o Post-Effective Amendment No. 123 Form Type: 485APOS File Date: December 23, 2005 Accession No.: 0000088053-05-001459 o Post-Effective Amendment No. 126 Form Type: 485BXT File Date: February 21, 2006 Accession No.: 0000088053-06-000156 o Post-Effective Amendment No. 130 Form Type: 485BXT File Date: March 23, 2006 Accession No.: 0000088053-06-000328 o Post-Effective Amendment No. 132 Form Type: 485BXT File Date: April 21, 2006 Accession No.: 0000088053-06-000415 o Post-Effective Amendment No. 135 Form Type: 485BXT File Date: May 19, 2006 Accession No.: 0000088053-06-000516 o Post-Effective Amendment No. 140 Form Type: 485BXT File Date: June 16, 2006 Accession No.: 0000088053-06-000646 The above referenced post-effective amendments to the Registration Statement were filed to offer a new Institutional Class for the Fund, which was to offer its shares to the shareholders of DWS International Equity Fund--Institutional Class ("Institutional Fund"), a series of DWS Institutional Funds ("Institutional Trust"), in a proposed reorganization of the Fund with the Institutional Fund. However, at a meeting of the Board of Trustees of the Institutional Trust ("Board") on June 27, 2006, the Board approved the liquidation of the Institutional Fund, rather than the reorganization. Accordingly, the Trust respectfully submits that the withdrawal of the post-effective amendments to the Registration Statement is consistent with the public interest and the protection of investors. Any questions or comments on this request should be directed to the undersigned at (617) 295-2565. Very truly yours, /s/ Caroline Pearson - ----------------------- Caroline Pearson Enclosures cc: John Greskiewicz Dianne O'Donnell, Willkie Farr & Gallagher LLP 2