OS: Microsoft® Windows® XP / Vista / 7Additional information on your graphics card
Processor: 1.2GHz processor
Memory: 256 MB RAM
Graphics: Graphics Card that supports Pixel Shader 2.0 and Vertex Shader 2.0(Vertex Shader Support can be supported with software emulation)
DirectX®: DirectX® 9.0c
Hard Drive: 300 MB
Controller Support: Microsoft Xbox 360 Controller or Direct Input compatible controller
I've not heard of complete incompatibility (like a window popping up and stopping you from actually running the game), but if lag is an issue, I'd reccommend lowering resolution, lowering detail, and putting the game into windowed mode. I cannot really say anything else because you were a bit vague in the description of your issue. What exactly is going on that lets you know that your graphics card isn't up to snuff?