LIVE CHAT PROGRAM

Hello. I need a clean program, built from scratch or from a script. The program will be very basic. I need one like this: [login to view URL] I do not need no administration area, or design, or user registration ... I have a design. I have a zone administrator and payment system. Then I need something very basic: the chat program with basic functions, plus a function for voice chat. That is, to choose between chat and computer-to-computer calling. The program has to be without any kind of problem. Completely failsafe. During 3-5 days will be made all the necessary tests to correct all errors. Once completed you will pay.