OS: Windows XP SP3 / Vista SP1 / 95/98/ME/2000/NT or XP /Vista (64 bit) Processor: Intel Pentium 4 3.0 GHz or AMD Athlon 64 3000+ RAM: XP – 1 GB / Vista – 2 GB Hard Drive: 6.5 GB + 1 GB available space Video Card: 3D Hardware Accelerator Card Required – 100% DirectX 9.0c compatible 128 MB Video Memory. ATI Radeon 9600 or Nvidia GeForce 5900 DirectX: Version 9.0c