For whatever reason, I could not get the included Lilliput touchscreen software/driver to work with XP on my Compaq Evo. I tried uninstalling and reinstalling numerous times with several different errors. The I searched and found these. They don't appear to be much different, but worked the very first time for me. If you are having problems give them a try.
No announcement yet.
Lilliput Touchscreen Alternate Driver