Minimum: OS: Windows XP SP2 or Windows Vista SP1 Processor: P4 3.2 GHz (single core) or any Dual Core processor Memory: 1 GB RAM (XP), 1.5 GB RAM (Vista) Graphics: A 128MB Video Card (Shader Model 3) - Nvidia GeForce 6600 GT / ATI X1600, or equivalent Hard Drive: 6.5 GB of uncompressed Hard Drive space REQUIRED FOR MULTIPLAYER: INTERNET: Cable modem, DSL modem, or 56.6kbps modem for online multiplayer play: Network: TCP/IP compliant network