@zack: Here are the minimum requirements as posted on amazon .
Minimum System Requirements
This game will not run on PowerPC (G3/G4/G5) based Mac systems (PowerMac)
* PC Minimum – Windows XP/Vista
* 6 GB Hard Drive Space
* 2.0 GHz P4 processor or equivalent
* 768 MB RAM
* 128 MB Video Card with support for Pixel Shader 2.0
* Mac Minimum – Mac OS X 10.5.3 Leopard or higher
* 4.7GB Hard Drive Space
* Intel Core Duo Processor
* 1024 MB RAM
* ATI X1600 or NVidia 7300 GT with 128 MB of Video RAM, or Intel Integrated GMA X3100