Shoutbox

Hey All,
sorry to ask for help so soon again but my script ran into a small brick wall.  I'm looking for how to call an event only on first  contact.

I'm not explaining it very well.  Basically I mean that when you recieve a message for the first time, WLM creates a popup telling you the contacts, and their message.  I'm looking to call a function when this happens, but not when subsequent messages are recieved, unless the window has been closed again.

is there any Event Handler or way to do this?

Cheers guys