CPU: 2.4 GHz dual core or better
CPU Speed: 2.4 GHz dual core or better
RAM: 1 GB (2 GB for Windows Vista
OS: Windows XP/Vista
Video Card: 3.0 Shader Support recommended. Nvidia Geforce 7800 or better or ATI Radeon X1800 or better
DirectX version: 9.0c
Sound Card: Yes
Free Disk Space: 8 GB of uncompressed free hard disk space (plus 600 MB for Windows swap file)
DVD-ROM: 6X DVD-ROM
You just need these . Just check whether u have these and your system is an outdated one,upgrade that.