Intel 2.66ghz Duo, 2gb RAM, GeForce 8600 GT and neither of those work. I've been on to Rockstar and nothing they've suggested works. Literally the closest I've come is to terminate the svchost.exe process that using the most memory. The games run but it somehow prevents the game from detecting the audio and graphics drivers. The games run but totally muted and on the lowest graphics settings.
San Andreas works fine, as does GTA2. I'm at a loss really.