I used to set up networks for training and conferences my group did. We picked up an Extricom http://www.extricom.com/. I never had problems in the dozen times I used it. Its an interesting system, it has a central Wifi unit, and you run cat-5 out to 4 remote transmitters. You can place them spread out over the area. Admittedly the model I used, the Extricom ESX400 and 4 radios no longer seems to be available but check it out. -Joe

I have about 5 of the guru and sheeva plugs, they all eventually brick from bad power supplies or shutdown and when they overheat.