OS: Windows® XP SP 2 (32-64 bits) / Windows Vista® (32-64 bits) / Windows 7® (32-64 bits) [[Windows up to date and latest service pack installed]] CPU Intel Core 2 Duo E6600 2.4GHz / Athlon 64 X2 Dual Core 5600+ (Dual core processor /Core duo 2 or better) Memory: 2 GB RAM (2 GB on Windows Vista or Windows 7) Video Memory: ATI RADEON HD 2900 / NVIDIA GEFORCE 8800 GS HDD: 8 GB of free Hard Drive Space