I apologize that this is inherently a somewhat complex question, so please
bear with me. I'll try to describe it as quickly and simply as I can.
Including a employer-owned PowerBook, I have three Macs that I hook up to
the internet via Time-Warner cable (RoadRunner). Generally speaking, they
each have a separate connection to an Ethernet hub/router, and the cable
modem is another of the connection to that router, as is my printer. I
need the network just to communcate between the Macs and with the printer,
and since the cable modem hooks up through Ethernet, that's how it ...