[Tristan Lall]

Which graphics chipset? An Intel 845, 865, 915 or 945 with integrated graphics should support decent-enough 3-D and shading. A Via (with integrated S3 graphics) or SIS should work, but they're not very powerful, compared to just about everything else. If you've got an ATI Radeon IGP, you'll be fine, and even an off-board integrated Rage XL will run it in 3-D (slowly!!!). If you've got an nVidia nForce (Intel edition), you'll also be fine, but why you'd find one of those on an eMachines computer escapes me—actually, I'm not sure if the integrated graphics are available on the Intel models. Realistically, though, I'm 85% sure that you'll be fine.

If you haven't bought it yet, look for deals on something with an AMD Sempron, and a cheap GeForce. They're the best value right now. (Or, second-hand P4 Northwoods, like a 2.4C, on an 865G chipset.)