Operating System: Microsoft Windows 98SE/2000/XP (Admin rights required), Pentium III 700 Mhz (or Athlon(tm) equivalent) Windows 7 Service Pack 1 and above are unsupported at this time. Graphics: 128 MB on Windows 98SE, 256 on Windows 2000/XP, 32 MB DirectX 9 compatible 3D Graphics card (nVidia GeForce or Ati Radeon Chipset), Windows 98SE/2000/XP-compatible sound card (100% DirectX 9-compatible) Hard Drive Space: 2 GB free disk space Other: mouse and keyboard. Multiplayer Requirements: Pentium® III 1.0 GHz (or Athlon(tm) equivalent), 256 MB, 64 MB GeForce or ATI Radeon equivalent, LAN, ADSL or Cable Modem