When I got XP I got that message from quite a few older programs - like the install disk for my printer, which I hadn't updated. It didn't make much difference with the printer, since I just used the install wizard and it works OK. Hmmmmm...just remembered that I had the same trouble with a free copy of Painter that I got with my Wacom. I e-mailed the tech people at Wacom, and got a workaround. I'll go hunt for their e-mail, back in a few minutes....