MMORPG site

I'm wanting to create a MMORPG site. Cartoon in style and aimed at kids 6-12 years (similar to Club Penguin- not fantasy). I will create all artwork/ animation (Flash)- I need someone to create the back end of the site. Basically players Log in to the site and use an avatar to move through different scenes (using keyboard arrow keys). random animations will appear in each scene and players can then take "virtual photos" of these (via a mouse-controlled camera viewer). these photos can be saved in players' members area and also emailed to friends. More details available on request, including a demo i have created showing artwork of scenes and avatars. I am also willing to negotiate with the successful coder a percentage of any future profits.