we did it for the mcm dinner gtg... worked GREAT ! .... we have a laptop w/ a wireless card then did up a quick yahoo account w/ like mcmgtg as the screen name. then we set up yahoo's im service w/ the permissions set for ANYONE to view, (no permissions needed)... we had folks popping on all through the dinner to see what was going on... worked real well and best of all... it was FREE !