When I did the same thing, upgrading from 98 to XP, it didnt automatically detect any of my devices. I had to manually detect and install drivers for the sound, video, etc. I was used to 98 at least telling me there was something there, even if it didnt know what it was or where the driver was. XP didnt do that for me. I'd check the device manager and make sure all your devices have a listing, and that there are no ? in there.