PC game is slow/choppy -- need more video memory or more p..

Archived from groups: comp.sys.ibm.pc.hardware.video (More info?)

My copy of Grand Theft Auto III for the PC runs poorly. Even on the lowest possible display settings, gameplay is slow and choppy. System requirements for GTA3: Minimum Recommended My System -------------------- -------------------- -------------------- 96MB RAM 128 MB RAM 256 MB RAM 450MHz P3/Athlon 700 MHz P3/Athlon 750MHz Duron 16MB Video Memory 32MB Video Memory 32MB Video Memory My video card, by the way, is an ATI Radeon VE, if that matters. Anyway, as you can see above, the problem is probably either my processor or my video card. I'm not going to buy both a new CPU and a new vid card, so I want to know in your (hopefully) well-thought-out opinion: 1.) Which component is more at fault for the poor performance, and 2.) What I should upgrade to in order to make the game run smoothly. I'm not worried about ridiculously high resolutions and special graphical effects; I just want the thing to run at normal speed. I know enough about computers to have custom-built several systems, including the one in question. So, I'd appreciate an answer with a reasonable amount of explanation and supporting evidence. Thanks!