I don't know if this has been discussed yet (it's a long thread) but I've gone on new routes downloaded from the computer to the Edge and have done just fine. First I get the local cue sheets off the internet, then use a mapping program, Brad Culberson's CourseCreator2 to map out the course. I have the course is converted to a .crs file, which I import into the training center and then up to the Garmin. When I head out I just follow the little line. It's pretty cool.

Another cool thing is getting on MotionBased and see all the trails from German and Holland and anywhere.