There ya go.
If you wanna blow money get 2 GeForce 8800s (and an sli mobo) and go run Crysis at max. Probably still couldnt do it.
I'm a budget gamer, go with 2-3 year old tech that people dump at ridiculously low prices. You can get an ASUS mobo 939 socket for $20 since people are jumping on dual/quad core bandwagon. I won't pay $2000 to be at the top for 3 months.
IMO the only thing worth maxing on a PC is the monitor. Monitor tech changes really slow. Mine has only gone down $20 in 2 years. Processors/graphics cards deprecate faster than a new car. I have old cards that would cost me more to ship than I would get in return for selling.