We are currently working on one of our website. Getting into the point, this asp.net website is kind of social network and highly dependable on the backend SQL database. Each member got a unique ID in database. All you have to do is just make an AJAX chatroom (kind of facebook chat) for the members with some constraints. This chatroom is open for all. User can select its username and an Avatar.
After logging in the chartoom opens displaying online users in the right section. This is open chatroom. NOW, if user clicks any of the user online then new chat-window opens up where user can personally message him. Moreover, The whole chatroom has one button to create new chatrooms (where he can add the people as a group-chat). All the chats are erasable (with some special admin (satisfying some criteria of course). While ligging into chatroom user can command).Users can send smileys and pics on chat. PM me for more info.
KEEP IN MIND that this required good skills in Database, AJAX, asp.net and some supplement understanding of jquery and chat-servers. U can use Jabber (for asp websites) (on [url removed, login to view]) as backend or modify the script of candy-chat. But its difficult in comparison with making it from the scratch.
PLEASE DON'T BID if You are not capable of this. We can't afford delay. As we are the start-ups, the low-price bids will get the priority. You can send us your proposals with the view of way how you are going to accomplish this task. You can get a help on... [url removed, login to view]