Link:
System Requirements:
Operating System: Windows XP (SP3)/Vista/7
Processor: Pentium 4 processor with 2 GHz (dual core processor recommended)
Memory: 1GB Ram (2GB recommended)
Video Card: GeForce 6800 or Radeon X1600 with Shader Model 3.0 and 128 MB RAM
Other: DVD ROM Drive / 4 GB hard disk space