WotLK Client resetting

[Screamagewhy]

Hey,
I've recently installed the WotLK on 2 computers, 1 laptop and 1 desktop.
Both play perfectly, however the desktop version isn't saving my options like resolution, login details or the fact i've watched the intro cinematic.
Have i forgotten a simple step? it's really annoying having to re-login, change resolution and graphics every time :(

[Thorbjorn]

Read stickies. The answer is here: http://forum.warmane.com/showthread.php?t=321845