WoW on Vista game keeps closing when I sign up

[Doomsoul]

I didn't know where to put this, so here it is.
I have installed WoW and updated it without problems on a computer running on Vista. The problem is, when I enter my account name and password, I click Login and the game closes. WoW still exists as a process, but I cannot access it. I tried Windowed mode, I tried different compatabilities (XP,other). My Security Center is disabled, so It doesn't ask me anything about allowing the game or anything.

Do you have any ideas? I am currently at work and I don't have the time and possiblity to do it :P

Thank you.


P.S. Ok, I did some digging around the computer. Since it's my working notebook, there could be some Domain rules which do not allow me to run any unknown programs that require an outbound Internet connection. If that is true, can someone give me a detailed tutorial on how to create a rule that will allow WoW to run properly. If that is the case of course.