Shoutbox

As far as I know there exists no separate add-on that contains this function. Instead, I'd talk to your father about installing Messenger Plus!. Most likely he is under the false assumption that it will install spyware on your computer. This is not the case. There is an optional sponsor which you can choose not to install during installation.

If your father has further questions, encourage him to post a thread on these forums. Many helpers are always willing to clarify issues he might have