Exhibit 99.906


      CERTIFICATION PURSUANT TO SECTION 1350, CHAPTER 63 OF TITLE 18,
          UNITED STATES CODE, AS ADOPTED PURSUANT TO SECTION 906 OF
                       THE SARBANES-OXLEY ACT OF 2002

I, William G. Papesh, President and Chief Executive Officer of the WM Trust
I (the "Funds"), certify that to my knowledge:

1. The Form N-CSR of the Funds for the period ended April 30, 2004 fully
complies with the requirements of Section 13(a) or 15(d) of the Securities
Exchange Act of 1934; and

2. The information contained in the Form N-CSR of the Funds for the period
ended April 30, 2004 fairly presents, in all material respects, the
financial condition and results of operations of the Funds.

Date: July 2, 2004

By: /s/ William G. Papesh
    ---------------------
    William G. Papesh
    President and Chief Executive Officer






      CERTIFICATION PURSUANT TO SECTION 1350, CHAPTER 63 OF TITLE 18,
          UNITED STATES CODE, AS ADOPTED PURSUANT TO SECTION 906 OF
                       THE SARBANES-OXLEY ACT OF 2002

I, Jeffery L. Lunzer, Treasurer and Chief Financial Officer of WM Trust I
(the "Funds"), certify that to my knowledge:

1. The Form N-CSR of the Funds for the period ended April 30, 2004 fully
complies with the requirements of Section 13(a) or 15(d) of the Securities
Exchange Act of 1934; and

2. The information contained in the Form N-CSR of the Funds for the period
ended April 30, 2004 fairly presents, in all material respects, the
financial condition and results of operations of the Funds.

Date: July 2, 2004

By: /s/ Jeffery L. Lunzer
   ----------------------
   Jeffery L. Lunzer
   Treasurer and Chief Financial Officer