Customise AJAX IM

[login to view URL] I'm looking for a developer who can customise the ajax im script and connected it to an exisiting site. Users have to log in before accessing the site so all people accessing the chat will be logged on with session varibles. I shall also either provide the SQL or access to a PHP script to get a list of online users (I'm not sure how Ajax IM needs this list so I will work with you to get what you need) So all I need is for someone with good php/js knowledge to investigate and make the changes needed to integrate the ajax im framework into the site. Ideally I'd like to make some graphical upgrades but this will be as a seperate project once we are successfully integrated. So please have a look at the ajax im link above and estimate how long it would take to customise to to use an exisiting php/mysql website's DB. Many thanks!