He got back with me and said that he reinstalled the latest and the old ones that he had before we discovered the problem, to no avail. (also on this pc he doesn't have anti virus)

@MS: He tried reinstalling DirectX and he has the latest drivers, we tried with the earlier versions and the latest, both failed. It is nice to know that it doesn't have to do with the card or the commercial edition. Also the game ran Perfectly, no problems with shaders (or missing shaders), no slowdowns, no collision issues, no physics problems, etc. Nothing wrong.

@EvilSOB: It was an nvidia 6100, the drivers were uninstalled when the new drivers were installed.