Sorry to read about your problems with the machine that you own. However, there is some name confusion. In order for a Tablet PC to qualify as a Tablet PC then it must use certain hardware and the MS Windows XP for Tablet PC Edition. The
Fujitsu Stylistic 3400 is a pen tablet with a passive digitizer and will not run the Tablet PC software on the Microsoft pages designed for Tablet PCs.
With that said, what version of Penx are you using?
In the meantime, don't forget to check out the
pen tablet support pages by Fujitsu.