[andrewas]

that power supply is a little small, id replace it if i ever upgraded.

elsewise, this is a common symptom of video driver problems. or direct x problems. anyway, re-install all your drivers with the latst versions. its a good idea even if it dosent fix the problem - ive seen several hundred percent speed increases through this.

also ME is ram hungry - the price is so low right now even a 5 year old should be able to afford another 128 dimm.

and of course it goes without saying (sometimes) that you should be running the latest version of BG2, that you have gone through the readme etc etc.