Chatroulette

Hi all, I need a Software like chatroulette.com. • Client Should use the same technology ! Should have similar layout with some small changes upon connexion: - People should be able to? decide whether they're a girl, boy or? couple and to whom they want to be connected (random, girls, etc.) -? There should be a new option 'local'.? So that its possible to only get local chat partners. (range? should be adjustable: country, continent, worldwide) - People can register for free using log in and password, or just ? ? use the service - Chatters can both click a button "keep in touch!" so they're? both? added on their personal chatting list (if they're? registered? users) • Server I'll find and pay for the server myself, I just need to know the requirements for such a website to run smoothly, and deal with very large numbers of connexions.