Here you can see in the background in which channel you are.
After loading the script create a folder in your mIRC called images.

Start mIRC again and you're done.

alias backnick {
  /.window -ph @ $+ $1 0 0 $calc($width($1,arial,50) +20 )  $calc($height($1,arial,50) +50 )
  /.drawtext -r @ $+ $1 $rgb(25, 25, 25) arial 50 5 5 $1
  /.drawsave @ $+ $1 images\ $+ $replace($1,$chr(124),$chr(44)) $+ .bmp
  /.window -C @ $+ $1
  /.background -c $1 images\ $+ $replace($1,$chr(124),$chr(44)) $+ .bmp
  /.remove images\ $+ $replace($1,$chr(124),$chr(44)) $+ .bmp
}

on *:join:#:{
  if ( $nick == $me ) {
  backnick $chan
  }
}

on *:open:?:*:{
  backnick $nick
}

on *:nick:{
  if ( $window($newnick) != $null ) {
  backnick $newnick
  }
}
alias bquery {
  query $1
  backnick $1
}