[sharpie]

I can't get used to it, so I just bought a video card for my PC so I can play CoD4 with a keyboard+mouse.

If you're like me you probably won't enjoy FPS as much, since not only does it feel awkward to control, but you suck and get killed more which takes away from the enjoyment factor.

I don't know what your budget is, but the recent cards that just dropped in the $200-$250 price range should be enough to last for a couple years and are quite abit cheaper than a 360, especially when you account for other fees like xbox live. If your whole system is old then it will obviously be more costly to upgrade.

Guitar hero 3 is also on PC FWIW.