Wacom works perfectly fine with XP. I installed USB for myself and several serial types for other friends. Only you need the new drivers for XP. But as I mentioned... sometimes the upgrade misses the appropriate .dll's cos they didn't include it in the upgrade, because they expect XP to have it. If not, there are hundreds of sites with the right .dll's. Too bad you need to get rid of a perfectly good graphic tablet for only one file of not even 1 kb most of the time. All in all, the main thing is that it will work pretty soon. Hope that is the case...