Windows 2000 (plus Service Pack 1 or higher)/XP (Home or Professional) (plus Service Pack 1 or higher), 1.8GHz Intel Pentium 4 or AMD Athlon processor or equivalent/better, 512MB RAM, 128MB video card w/DirectX 8 support (pixel and vertex shader), DirectX 7 compatible sound card, CD-ROM drive, 1.7GB free hard drive space, DirectX 9.0c (included).