I use msn (via gaim or meebo), but not the msn client, so I haven't got a chance to try this, but I find it intriguing.
http://www.mctedoprogramming.com/news/news.php5?nid=154
Anyone try this? Does it work well? Or know who authored it (I see the author is Edward McCutcheon, but I'm curious what his screen/player name is.)
-SilverFox