Sorry to bust your bubble, but these are nothing more than the original touchscreen drivers from Windows 95/98.
They barely worked in Win98 (totally inaccurate towards the edges of the screen). They didn't work for me in Windows 2000 and I seriously doubt they'll magically work in XP.
Just the same, if someone can prove me wrong that would be great news.
Otherwise, there still are no touchscreen drivers for XP (yet...)