Ive been so busy that I havent been able to comment on this but one of our resident Silverlight dudes, Devin Brown, has updated Chatblender to work with silverlight 1.1. (Not 1.0 compat at the moment, given time I will try to get the 1.0 version running again and then do a browser sniff to route you appropriately)

If you have messenger give the activity a try at: http://messenger.msn.com/Resource/games.aspx?appID=99995245