Kabaka's pretty much got it!
Just another suggestion that I personally use, if you always want to go into the main channel when you connect...
If you click "Change..." while changing the Furtopia server settings, or click on your Furtopia IRC connection as depicted by the white dot and go to "Connection Preferences", you'll open up a window that says "IRC - Furtopia Preferences".
Type "/join #furtopia" in the "Perform Buffer" area and check the box. Basically, this will automatically pass the "/join #furtopia" command to the server when you connect, which will put you right into the #furtopia channel.
You might be able to automatically op yourself too; I don't know what the command is for that, though.