Oh boy...
A TGP doesn't need a biller, such as CCBill. A TGP (Thumb Gallery Post) lists gallery pages which are either submitted by other webmasters or provided by your sponsors. Galleries which are provided by sponsors are known as FHGs (Free Hosted Galleries).
Here is GG&Jim's monster list of sponsors that you can sign up with.
http://www.greenguysboard.com/resour...ors/index.html
Personally, if I were you, I'd do a lot more research before I'd bother starting any type of site. There's a lot more to it than meets the eye.