I neglected to acknowledge the two responses I got to
this request:

  >> ... Does anyone know a place on the net where I
  >> can type in a street address, e.g., my home, and
  >> get a reasonably correct return?

  d> http://www.maporama.com/share/

  m> http://www.geocode.com/modules.php?name=TestDrive_Eagle

While the numbers given by these two sites are
different in about the fourth decimal place, this is
certainly good enough for my purposes. 

The latter advertises a commercial service, and will
allow only 25 requests before shutting you out. I
needed only one, so that's cool. The other is free.

Thanks much for the help.

-- 
Lynn David Newton
Phoenix, AZ