Bleh, I made an mIRC guide like a loong while ago. I wonder what happened to it T_T" I can't find it, so I'll crudely explain.
You open mIRC, go past the options and press OK.
When you're confronted with a blank page, type /server irc.rizon.net
Sometimes you have to wait a while, but a little box usually immediately appears. Enter the channel #FAKKU and you should be in.