Sure, post your hardware specifications here and we'll take a look at what you have and see if it is adequate to meet minimum specifications for the game, and if not, what you are looking at for a rebuild. Ideally I need the following information from CPUz (http://www.cpuid.com/softwares/cpu-z.html)
Processor name, Mainboard tab the motheboard model number, and Memory tab the amount of system memory you are running. From GPUz http://www.techpowerup.com/gpuz/
I need just the graphics card name.
I also need to know which version and service pack you are running of windows. That can be found on the control panel under "system". I need to know whether you are running Windows XP or Windows 7, and if 7, are you running 32 bit or 64 bit.
Once we have that information I can give you a better idea of what may be going on.