By using a web browser to access ConferenceRoom's Java Client, served by ConferenceRoom's built-in Web Server or by using a web browser to access ConferenceRoom's Java Client, served by another web server. If the server is running on your machine you can access the client by going to http://localhost:port/
Or by using a standard IRC client like mIRC. ConferenceRoom is completely compatible with the IRC standard and is able to connect to any standard IRC client on any platform. Standard IRC clients can be found at ftp://ftp.webchat.org/pub/clients/.