Shoutbox

I remember reading somewhere that you could change the text that appears, but I'm unsure what you have to do exactly, if I find anything I will update this post.

EDIT:  from a quick google search and a look at my registry, it seems that microsoft do not keep this as a registry setting anymore and you would probably have to patch a dll.  I hope someone else can help you with this as I do not trust myself giving this kind of advice as I'm not confident about it.