Larry got the Earthmate receiver to work with Streets & Trips.  It does
not create a route log or display speed/bearing/distance on the laptop
screen as the other software did, but has coverage in Canada.

I've used Streets and Trips for trip planning for several years and like
it very much.  And it's cheap, less than $20 after rebates etc.
Diffucult to explain the process here, but easy to use once you learn
the software (like any other package) and has done a great job providing
printed directions to get me to some obscure addresses.  I prefer the
convenience of planning a trip on the computer rather than on a small
GPS unit.  I believe that you can load a route into the dashboard units
from your computer.  I mount a GPS unit on the dash, and can connect it
realtime to the laptop, but have not found that practical.  If really
lost I could use that alternative.  I find that the printed directions
are easier to use.
I can visualize the advantages of a system that tells me to prepare to
turn and what direction but it would take some getting used to.
For the time being my free maps from AAA and prior planning will have to
do.