Shoutbox

That is possible in one way, if you disable your Display picture (refer: http://shoutbox.menthix.net/showthread.php?tid=45687), although you will lose your capability of using Display Pictures.

Anyways, no way to do that with a Display picture, cause of the protocolo (refer: http://shoutbox.menthix.net/showthread.php?tid=39350).

To download the open convo checker, it's listed here: http://shoutbox.menthix.net/showthread.php?tid=28166