Problems with Dell Demension 2400/3000

Okay I am ashamed as a PC Tech/Network Support in training to say I own a Dell 2400 but hey Im a student and broke so dont speak before you say "Buy a new computer". Okay with THAT out of the way. When I first got Guild Wars I descovered that the Dell 2400/3000 computers could run the game decently but would crash (Blue Screen of death) when messing with your inventory. With a little research I discovered that I had to rollback my drivers. I havnt had a problem scince....untill now! After GWs latest massive download I have been getting occasional blue screens when in my inventory the first of which gave me an error message saying essentially that my video driver was not compatable...even though Ive been using this driver for several months. I play other games such as Call of Duty, Vampires of the Maquarade, etc. fine, no problems so obviously it is a driver issue. Anyone know of a driver for me? Anyone else have this problem?

What video card are you running?