you can try PenX, third party handwriting software for NT & 2K, works in XP too. it is Ok:

when I was using a tablet full time I used MessagEase:

MessagEase Onscreen Keyboard

It is optimized, one easy stroke per character, based on high freq characters . There are different versions for diff languages, obviously the high freq chars change when changing language.

Once I got used to it it was muuccchh faster than handwriting recognition.

you can grab this zip of mine and dig out PenX if you want:

http://www.thesprocket.net/3400setup.zip

PenX is buried a little bit, it is under /Drivers/Digitizer