Signing up is simple. You pick a name, and... sign up! But what's important is that you pick something that adheres to these guidelines:

• Does not include numbers or symbols (*,~,# etc)
• Is not the name of a character from the show, or somebody already in the game (it may be difficult to know if your name has been taken, but you will be notified if it has)
• Is simply a real, plausible name!
• Last names are not necessary, but allowed.

It seems like a lot of restrictions, but when you think about it, really it's not. Names are very important in the World, because, obviously, it's how we know who is who, and if you have a realistic name, the World is more realistic also.