How do I do this with utchat?
"By default, the “channel” parameter is auto-generated (based on the “title” parameter), but it's possible to specify it in order to create totally independents channels.
To handle multiple independent channels into one script passing the channel name by URL, just configure the chat like this :
$params["serverid"] = md5(__FILE__);
$params["channel"] = $_GET["channel"];
$chat = new phpFreeChat($params);
[...]
When browsing the script, for example http://.../mychat.php?channel=myroom, a totally private chat will be created and data will be stored into “phpfreechat/data/private/chat/myroom/”. "