OS: Windows XP / Vista Processor: Intel Pentium 4 processor supporting HT Technology or higher, or AMD Athlon 64 or higher RAM: 512 MB (Windows XP), 1 GB (Windows Vista) Hard Drive: 8 GB available space Video Card: DirectX 9.0c/Shader3.0 compatible, VRAM256MB, NVIDIA GeForce 6600 series or higher, or ATI Radeon X1600 or higher (excluding NVIDIA GeForce 7300 series) DirectX: Version 9.0c