After you have connected to your UNIX shell account, type: "IRC <your nick name> irc.chiro.org" (no quotes). This will probably connect you to an IRC server. Be patient and you will soon be into the Chiro Org IRC server. Once you are connected, type the command: "/join #Chiro-Chat" (you guessed it...no quotes). Don't forget the / and the #.
Good luck and if you have problems you know where to reach me :)