I dont own that game so dont know it may be a problem with the game itself but you can try this:
1- Make sure you download and install the latest CCC from here:
ATI Graphics
2- Install these updates:
DirectX (You need this whether you running DirectX 9, 10 or 10.1)
C ++ for Vista 32 bit
C ++ for Vista 64 bit
Defrag your PC then reboot and try running the game again.