Windows (98, Windows NT 4.0, or Windows 2000 Pentium2 233, MHZ Celeron, pentium3 or AMD Athlon CPU 64 MB System RAM (96MB for 3D hardware acceleration).  Sound Blaster Live! For environmental audio effects.  Matrox g200/G400, ATI Rage 128, or TnT2 recommended for 3D hardware Acceleration.  850 MB of Free Disk space.  200 MB of free virtual memory.