Instructions: Choose a nickname, leave password blank, and click connect.
If you want to secure your name so that no one else can use it, once in the chat you can do Menu -> Register Nickname. Then next time just log in with your chosen name and password.
If nothing shows up, or other issues: Install Latest Flash Player
Alternate ways of entering the chat: First, use the web-chat below to register your nickname if you want to password protect it. From then on, you can use another IRC client to connect:
Private Messages: To open a private side-chat with someone, right-click their name in the list and select "open a query". If someone private messages you, a new window will open. To return to the chat room, click on "noblerealms" along the bottom. To flip back to the private message, click on the person's name along the bottom.
Software Site: visit the LightIRC website for more info.