Webcam/Chat Script

I'm looking for someone to whip up a script similar to PPVChat ([login to view URL]), wherein the user can. I'd like to be able to manually assign credits to individual users -- monopoly money, so to speak -- that users can use to "tip" the camgirl through the use of buttons along the chat window ($1, $5, $10, $20). Outside of that, I don't need anything flashy. The chat window doesn't need crazy user-selected colors or anything. Contact me, and we'll discuss further.