On a different but related subject: I bought a Time Machine, which set up great and has subsequently worked perfectly. But I live in a big old apartment and needed to extend coverage away from my study to the living room, on a different floor and bought two Expresses to do so. Set them up but then they kept dropping out, flashing orange lights, couldn't see them on the Airport Utility, etc. But then I called them completely different names, as per your tutorial, and gave them different passwords too. Problem solved! One thing though - instead of getting them to "join a network" I selected "Extend a network" - what's the difference?
