This game is optimised for Microsoft's DirectX 9.0c.   In order for you to play the game, you must have DirectX 9.0c compliant drivers for your video card and sound card.  Please note that although DirectX 9.0c is installed with the game, your video and sound card drivers will not be upgraded to DirectX 9.0c drivers. 

You will need to obtain the latest DirectX 9.0c drivers from the manufacturer or PC supplier. These drivers cannot be supplied by Eidos.