Thank you both!
I figured out how to drag in MapSource. Just like you said.
For Mapquest dot com it's super simple. Create your route and when you're all set there's "print", "save", and "send". You have to have the Garmin Communicator for it to work (mapquest will link you there) and you send to gps.
When you fire up the GPS it will either start normal OR start with the "new data found" screen. Direction for both are the same. If you get a normal start on the unit you must do an initial step at the beginning. Click "where to", "routes", then "new" (at the bottom). You're download route will appear there with whatever name you gave it in MapQuest. Select the route and then click "import". After that click "done" and then "back". The new route will now appear in "routes".
It's difficult to see but the little drop down menu in the upper left corner on the attached image is the "send" and drop-down with cell, onstar and gps to select from.