everytime i try to play i get a message saying to make sure i have directx 9.0c and or pixel shader 2.0 supported. i have a nvidia quadro fx 1600 card which says supports 4.0 shader and when i search dxdiag it says directx 11 but i downloaded "the complete 9.0c" and i still get the same message i don" know if i am forgetting something please help i am dying to play