Fully Integrate phpfreechat 1.7 into Pligg 2.x (cms)

Integrate phpfreechat 1.7 into Pligg 2.x (bookmark/Linksharing CMS) I need that all the users of a web (pligg), when they log in in the site of same way be in "phpfreechat" with their usernames as their nicknames. when log out, the same be happens in the chat, integration with the design is easier if you know "smarty php" ... any doubt consult me​​, I can give more details ... sorry but my english is a little tangled... =)