DAC connection to PC with USB

Help ! I can't seem to get any sound to my new PS audio DAC111 through the usb connection on the computer. Call PS audio.... They said to go to audio output in the control bar, shut off desktop speakers and select usb output or usb kodac. I said great, that not hard. I can not find any of this in my windows xp control panel.
How do I get music to play from foosbar to my DAC111 through the usb. What settings, and where our they on my computer?? I would have never tryed to make this PC into a music server if I would have known you need a PC geek !!
Thank you for any help you can give to me. Brian