Completely off topic, but perhaps you should invest in a graphic accelerator card that has more on board memory or more RAM. I usually run 30+ processes including 2-3 copies of IE, mIRC, OutLook Express and several others like Window Blinds, huge wallpaper, Object Dock and a few other apps and all my games run fine .. including Doom 3.
Athlon 2.2Ghz, 1Gig RAM, 128MB Vid RAM
Athlon 1.4Ghz, 1.25Gig RAM, 64MB Vid RAM
XP Pro SP2.
