click herecreate a nickname, and fill in the connection details with this:
Rizon will ask for a password, you will need to create a passkey for you nickname, and an activation e-mail will be sent to you. Enter the activation key when told, and you're away! Chat from opticraft will come onto your screen, and you can talk to people. It shows up in chat on opticraft like this:
[IRC]<nickname>: Hey guys! Im finnaly on IRC!!! :-)Have fun!
-kag