You may have to assign each one of the drives individually for each part of the sound card as I had to, Windows couldn't tell which was which, when your done it should look like this is the device manager under the sound card dialog
Sound4 Audio Device W/swt
Sound4 EEprom device
Sound4 game port joystick
Sound4 MPU 401
Its a self extracting file then it want's to put the actually drives on a 3 1/2 disk or you may direct elsewhere..