Re: A old computer needs games!
You could probably run Halo on it. The minimum requirements for the game is like a P3 700 mhz processor, and 32 mb T&L card. It probably wouldn't run all that great, but you were just asking if it was possible. My friends like those simulation games, like Ragnarok and Red Alert. I personally go for the fps, but only have Halo right now. Try getting CS 1.6, if you like shooters.
Rig -- Emachines T5026, 3.06ghz P4, 300W Bestec PSU, 160 sata hd, 512mb dual channel 3200 ram @ 3-3-5-8, ATI Radeon 9250 pci, dual layer 16x dvd+/-rw.