Thanks, Ellen, for the courtesy of your response. I would not go so far as to say that I'm "happy with" the Undertow software. The problem, of course, is that the campground information and ratings which were previously supplied by Trailer Life are no longer available in the program. So, even though the information is becoming seriously dated in the 2010 version, I continue to use it 95% of the time.
It is regrettable that so few ever discovered how valuable this cooperative effort at producing navigational software was. And that we who did discover it, have lost much of its value.