I think it is the ATi Radeon 9100 graphics. Because it is integrated, it cannot run probably. The only way is to purchase a new graphics card. Prices will vary between £100- ????. I experienced the same problem and after i purchased a new graphics card, it runs as smooth as silk.
This is my response. You can see other peoples reply just in case.
There could also be a patch to repair that but i doubt it.