Minimum: OS: Windows XP SP3, Vista SP1, Windows 7, DirectX 9.0c Processor: AMD Athlon 64 Processor 3800+ 2.4Ghz or better, Intel Pentium 4 530 3.0Ghz Processor or better Memory: 1GB XP, 2GB Vista / Windows 7 Hard Disk Space: 12GB Video Card: NVIDIA (GeForce 8800/GeForce GT220) 256MB graphics card or better, ATI Radeon X1900 256MB graphics card or better ( must support pixel shader 3 )