Well, I've done some hacking about, and by modifying WinXP's sysoc.inf I was able to install the NT4 Pen drivers into WinXP. However, they don't seem to actually work. As near as I can tell, the driver is in there, must just not work.
I did, however, stumble across this: http://www.vtablet.com/
It looks promising, however it has the actual digitizer types and not the Stylistic. Anyone know what the base type of tablet is?
Also, I've noticed there's a "Digitizer" in the Device Manager with no driver available. I suppose that'd need Fujitsu to write something for it.
Really hope I can get this working :)