Cod 4 probleme carte graphique je crois ?

Bonjour,
je vien d'acheter call of duty 4 je l'ais installé sans probleme apré l'avaoir cracké des que je l'ouvre une erreur :

Error during initialization :
video card or driver doesn't support alpha blending

apré le petit message y'as celui l'as :

----- Initializing Renderer ----
----- Client Initialization Complete -----
Attempting 22 kHz 16 bit [Windows default] sound
----- R_Init -----
Getting Direct3D 9 interface...
Pixel shader version is 0.0
Vertex shader version is 0.0
Video card or driver doesn't support alpha blending.

Error during initialization:
Video card or driver doesn't support alpha blending.

merci d'avance de votre aide