Chat platform text and video enabled website wanted

Hi, We need a website similar to [login to view URL], but of course, simpler, with only the basic functionalities like the listed details are below: 1. Chat Enable Website Text and Video chat is main aim of the website 2. Web application need to be developed basing on the above 2 requirements. 3. A backend management panel is needed of course to manage the listings. 4. Two types of member account: Admin, Admin can manage everything, user can manage what their own listings only. 5. A few Ad banners are needed(less than 5), and they need to be manageable via the backend, mainly an image with hyper link or flash. Maybe a editor will do. Ad banner locations will be given later. These are pretty much what our ideas are, as what I have mentioned, what we need for now is just the basic functions of a realestate platform, doesn't have to have everything as the example given. Please only bid when you have a clear idea of what we need. You might have done something similar, then please feel free to send us a link for reference. Thank you. SUDHIR [The Administrator removed this message for containing contact details which breaches our Terms and Conditions.]