NFS Underground 2 (problem with textures) (Need for Speed: Underground 2)

The people who already bought this miracle simulator and it all rides do not tell me what can I do to the texture of normal steel? (it seems that they are just hopelessly compressed to a weight of 1.2 KB each - right squares are visible)

PS: by the Way my configuration is P-IV 3.3; GeForce 6800GT 256Mb; 1024Mb Ram and what does he want? =)