My Tyros 2 is on one side of the room, my computer the other. It's not easy for me to run cables between the two to use my T2 as a midi source for the computer. CME has come out with a $249 wireless device to connect midi devices and/or computers. I know I will check it out.
http://namm.harmony-central.com/SNAMM06/Content/CME/PR/WIDI-X-8.html