Minimum
CPU: Pentium 4 2.4Ghz
RAM: 1GB
GeForce 6600 or Radeon X600 GPU with 128MB GRAM Shader Model 2 Required
1.6 GB of Free Hard Drive Space
Windows XP/Vista/7
Recommended
CPU: Pentium 4 3.0GHz or Dual Core 2.4Ghz, or higher
RAM: 2GB, or higher
GeForce 7600GT or Radeon HD 2900 GPU, with 256MB or higher Shader Model 3
1.6 GB of Free Hard Drive Space
Windows XP/Vista/7
You can always try it. I think you'll like it. But right now it's pretty much laggy and has got a lot of bug issues.