The registration system is very easy to do and I'm sure there are examples of code around. Having an admin panel where you can login and see all your characters, that is another massive beast in itself.
What kind of feature set are you after exactly?
I meant something more simple just reworking the current reg system with one master account for each user and list (create,check ban,delete) of pvpgn accounts. The admin panel I want something similar but to log last 5 addresses on each master/pvpgn account and some (lock,ban,delete) actions.