Thanks to everyone that posted suggestions. Mike Amato's question about wireless phones reminded me about the baby monitor. I did a pretty exhaustive set of experiments with the baby monitor's channels and the base station's channels and found that no matter where we were in the house and no matter what the channel settings, if the baby monitor and my wife's powerbook were in the same room, no connection for her, but my Rev. A LunchTray was fine. Chalk it up to those extra 2 inches of aluminum absorbing the interference? Interestingly, if we are in the path of the baby monitor but right next to the base station, I have fine connection when both powerbooks are up, but she does not connect. If I close my Powerbook, she magically becomes able to join the network. I wonder if my Bluetooth is interfering, too. Hmmmmmm..... Thanks, Peter A little computer haiku: I can't remember the last time I restarted I love OS X This message sent with Mail.app 2.0.7 on Mac OS X 10.4.5 pkrug at mac.com