I've been using Windows XP for awhile now, and I've had my Summagraphics tablet for years... Never used it to its full potential. I know it's not highly likely that many of you have the Summagraphics SummaSketch III graphics tablet. I do know that GTCO-CalComp makes many popular graphics tablets. A few weeks ago, I wrote GTCO-Calcomp and asked about Windows XP Drivers. They told me that Windows 2000 drivers would work fine. They seemed to work ok till I noticed that my brush size didn't increase when I chose a larger brush. I noticed that the brush strokes came out very thin, no matter how hard I pressed on the tablet. I was about ready to give up on it all when I decided to visit the GTCO CalComp web site. Sure enough, there was an announcement that Windows XP drivers were finally available. I gleefully downloaded and installed the new driers, and my SummaGraphics Tablet now works fine. If you're using Windows XP, be sure your graphics tablet is using Windows XP drivers.... other drivers most likely won't work right.