Thanks for the answer Charlie. I did manage to get it set up as an "extender" I believe, however I'm confused as to the difference between extend and boost. If no further "energy" to push the signal is being added from the secondary Airport Extreme, then what's the point? Does the secondary device somehow know the incoming signal strength, and limit the amount of signal it produces to rebroadcast so that it doesn't produce any more signal than what's coming in? It does seem to help the coverage in my condominum, so it's working better, but was just confused with he reasoning. Don't feel obligated to respond, as I don't mean to waste anyone's time. Pardon my igrorance. Thanks for your help. Regards. Grant