Operating System: Microsoft® Windows® 2000/XP/Vista Processor: 1.5 Ghz Intel® Pentium® or equivalent Memory: 1 GB RAM (2 GB for Vista) Hard Disk Space: 3 GB Available Video Card: DirectX® 9 compliant video card with 128MB RAM Sound Card: DirectX® 8.1 or better compatible DirectX® Version: DirectX® 9c Internet Connection: at least 56k modem Multiplayer Requirement: Gamespy key (provided by publisher)