I'm not sure of which onboard audio that board has, but I've had an Audigy (1) Platinum installed with two mobos that had nForce audio on them. Never did I even have to disable the onboard. Just go into the control panel and tell windows which card you want as your default and it should be fine. The Audigy diver install usually whines about there being other audio devices in the system but under XP I have yet to see any issues. PLus, if you do a lot of work with audio, having two sound cards can be kinda fun to toy with.