Even though the base stations can't communicate with each other

The Apple web site contains very few details of the technical aspects of the AirPort. Having spent considerable time looking at the Lucent site, where there is plenty of information (though you do have to go digging for it), I saw that their base stations (WavePort II) can and do talk to each other. There is no information on the Apple site indicate one way or the other whether two AirPort base stations talk to each other.

From what I can gather from the theory of 802.11 (and I'm far from being an expert), every device, be it an ethernet bridge, PC card or whatever, is just like any other device. So... How does one AirPort base station know to talk to PC cards, but not to another AirPort base station?

There, I think that makes sense - you'll have to forgive me if it doesn't. I know what I mean, it's just that my brain works faster than my fingers :-)

Nick.