Pm notifier?!?

Is there some code that i can insert to create a notification or beep or something when I'm Pm'ed... I'm afk a lot and like to trade, but i miss so many people so often... Any help?!?

On receiving a text packet, check to see if you're the recipient. If so, play a sound or even text to speech the text sent to you.

Lol, I'm no Coders or anything... Was wondering if there is a previous few lines of code... If there is, any directions on inserting them into the script?