[Laggy]

Open mIRC.

Go to Tools -> Script Editors (or hit Alt-R).

Go to the Remote tab.

Copy and paste the following in (be sure to replace the nickname and password fields appropriately):

on *:START:{
  server irc.aeonro.org
}

on *:CONNECT:{
  if ($network == AeonRO-IRC-Network) {
    /msg nickserv ghost <YOURNICKHERE> <YOURPWORDHERE>
    /nick <YOURNICKHERE>
    /msg nickserv identify <YOURPWORDHERE>
    /j #aeon_ro
  }
}

Hit OK.

Restart mIRC.

Ta-da!