Well you could do something like this, but other than that I have no idea how else I could do it, sorry. frown

Code:
On *:Quit: {
  if ($query($nick)) {
    notify $nick 
    echo 7 -at $nick has logged out.
  }
}

On *:Notify: {
  if ($query($nick)) {
    notify -r $nick
    echo 7 -t $nick $nick has logged in.
  }
}