Graphics settings aren't saving?

Well I have just recently returned to World of Warcraft and have noticed windows 7 isn't very WoW friendly. I have been having issues with changing my settings, for example, I would change my graphics settings to windowed mode and log in etc, but when i exit the game and reload the game for any reason the settings are reset to default?

This is seriously annoying because i have to constantly change my settings aswell as select my realm every time i log in.

Please get back to me either in-game or on this thread, I'll be playing my shaman (Nraged) if contacted in-game.

Cheers.
-Nraged