I've got an Compaq NX9010 laptop (P4 3.06, 512M RAM, ATI Radeon IGP 345M video card [64M] running Windows XP) and I'm trying to run Doom 3. I know it won't look awesome, but I know it should be better than it is. I've tried all of the latest drivers, updates, patches, etc that I could find with no luck improving performance. WIth all the settings at the absolute bottom, all effects turned off, and a resolution of 640 x 480 the game is still choppy. A Co-worker has an older Compaq N800C laptop (P4 2.4, 768M RAM, ATI Mobile Radeon [64M] running Windows XP) and he can run it at 800 x 600 with most effects on a whole hell of a lot smoother than I can. What gives?