Online chating web site

hi we r launching a new site for online chating, all designing work has been done. i just want bids for programming. i dont know which language will be use here for installing digi chat software ([login to view URL]) in to it. so u must know about it. its your responsiblity. i dont need any registeration form i just want my user to put their nick name n enter to the chat room. that service will be free. so this is all what i want. if u have any better softwre then digi chat. do tell me about it, u must understand it before making any bid. plz paki n indian freelancers do bid on this project i'll prefer them