I now have my DSL connected, albeit at a slow speed.
I must give props to Jason, of the at&t support team for getting me through my most effortless and lowest stress DSL setup routine.
When I asked, as I have on other occassions, to manually set up the DSL modem, his words were, "OK". Just totally cool. An very nice to boot.
Coupled with Margaret the other day, I must confess that at&t is starting to convince me that they mean it when you either call customer service or tech support.