Download the Garmin
mps files from Doyles page.
I downloaded the Windwards.mps, and used "gpsbabel" like this from the command line.
gpsbabel -i mapsource -f windwards2011.mps -o gpx -F windward.gpx
This produced the windward.gpx file. The default uses circles with a dot as wpt icon. Use search and replace to change this.
All info is available in O, nothing lost!