Try turning off the GL Extensions in Wolfenstein. On my old comp, it fixed some problems, and just by chance, it will help. However, I can't find that toggle in MOHAA, so I don't know.
Also, if you have a newer card, which you do, it's most likely a driver problem.
Running a Hercules 3D Prophet III TI500 with Windows XP PRO FINAL, with 512DDR pc2100, and a Pentium 4 2ghz, i encountered a strange problem. In all games,especially Wolfenstein and Medal of honor, everytime i move and turn around, the game seems to freeze for a second, and all the graphics such as the walls, seem to move out of place, i need help.