Hello, the Call Of Duty 4 work perfect with my system PC:
AMD Athlon X2 5600+ 64Bits
ECS KA3 MVP
4Gb OCZ XTC Platinum Rev.2
Crossfire X ATI Radeon HD 3850 (512 MB)
Windows Vista Ultimate X64 SP1
The one problem is the installer... not uninstall the game
Greeting!