Wow, if you have that kind of money to burn might I suggest an
Alienware PC? These are top of the line as far as gaming goes. Here is what I run mine on:
Proc: AMD Anthlon XP 3400
RAM: 1024 MB PC2700
Video: ATI Radeon X800 Pro w/ 256 DDR
Basically any processor at or over 3 GHz, a Gig of RAM, and any GeForce or Radeon card made in the last year and a half should get you by. If you do have money to burn, Alienware can't be beat IMO. Happy shopping!