OS: Windows XP/Vista/7 Processor: Intel Pentium 4 (or equivalent) running at 2.4GHz or greater; AMD Athlon 64( 2.4GHz) RAM: 2 GB Storage: 1.5 GB available space Video Card: NVIDIA Geforce 6800 Ultra (256MB) or ATI Radeon X1950 PRO (256MB) DirectX: Version 9.0c