Brian48 gives good advice. The page with the Compaq drivers doesn't mention it, but you have to delete the CToem.cfg file before it will install on machines other than Compaq ones (I think this is true, but I haven't tried installing with the CToem file to find out). The drivers work very well with WinXP, and I've been using the latest builds of SP1 with no problems in the sound. To give it a polished look, I made an Autorun.inf file that uses the icon from the original CD that came with my Audigy and set it to run the setup file then burned it to a CD. Good stuff.