[Request] Currency System

I would like to request a new extension. If would be a virtual currency system in which the money is a currency you create yourself. Only moderators and admins would be allowed to give someone the currency. Also (not required) a bank system would also be cool, where users could deposit or withdraw currency they have saved up. I've seen things like this on punbb-hosting.com and would like to know if it is possible.

Thanks,
Bendad