Paul
I am running a Bamboo Fun (small) on XP. I have had no compatibility problems at all. It is a fun tablet to use and adds a great deal of control when using Painter. I have never used the included mouse because I just use my regular mouse.
The only drawback to the Bamboo for me, is the lack of tilt and direction tracking. It would be nice to be able to follow a curve and have the pen stroke turn as my hand turns.
Since I have now switched to a widescreen monitor, I think my next tablet will be an Intuos3 6x11. I also have an Aiptek large format but I find the sensitvity far too low.
I hope this helps.
Neil