Not sure how to tell if my PC can handle an AGP one. How can I tell?
Well, your PC would have an AGP slot. (It's set back further than the PCI slots, and has three divisions in it. A two-year old PC should include an AGP slot, I would think. I've had one since my PIII, four years ago. Motherboards also support different AGP speeds (2x, 4x...is it up to 8x now?) Usually the AGP slot is a different color, too. AGP is faster than PCI, so if your PC supports it, that's the way to go.