Operating System: Windows® 98/Me/2000/XP
Processor: Pentium® III or AMD Athlon 1.0 GHz processor or faster (1.5 GHz or faster processor recommended)
Memory: 128 MB RAM minimum (256 MB recommended)
Hard Disk Space: 5.5 GB free
Video: Any Windows-compatible video card(NVIDIA GeForce 2 or ATI Radeon with at least 64 megs of video memory recommended)
Sound: Windows®-compatible sound card. NVIDIA® nForce(tm) or other motherboards/soundcards containing the Dolby® Digital Interactive Content Encoder required for Dolby Digital audio
DirectX®: DirectX® version 8.1(included)or higher
Multiplayer: Internet (TCP/IP) and LAN (TCP/IP)play supported | 33.6K baud modem or broadband Internet connection recommended
They are the system requirements, By the way, you can find almost any game's system requirements by just going to google, and typing -
(game) system requirements
Also, you could download a demo of the game, and see if it works on your computer, if it does then the full game probably will. You could also download the full game or borrow it of a mate, and if it work's then go out and buy the original....
Or you could just download it, and forget buying it