Connect to a Server
Connecting to an IRC server is the first step to using IRC and is performed through the Connect dialog that pops up automatically when you first run mIRC.
You will need to enter some information about yourself in the Connect dialog, select an IRC Server from the servers list, and then click the Connect button to connect to the IRC Server.
You will know that you have connected to the IRC Server when you see a Message Of The Day in the mIRC status window. The Message of the Day contains information about the server, its owners and administrators, connection policies, and other helpful information.
At this point you will be able to Join a channel to start chatting.