1- get msn plus ( i don't know why . but get it anyway)
2-download plugin http://www.stuffplug.com/?act=download
3-when u open WLM click on stuff3plug-> general-> open in default browser .
if u want to remove ads from the messenger try this
http://dotnetwizard.net/live/remove-ads-from-live-messenger-without-patches-method-3/
if u got pb e-mail me endless.moon@hotmail.com
regards