I'm gonna come off as a complete n00b here, but I used to play WoW, then stopped. Like, months ago, I don't really remember the signing up process and all that stuff, so if I were to sign up again, what would I have to do? Would I need to buy the game again, or just a top up card? And when I install it, I'm gonna have to wait for it all to patch up again... which will take forever...