The routes and waypoints should be directly transferrable. Terrain Navigator maps are raster maps, made of individual pixels, and thus cannot be immediately transformed into Garmin-compatible maps. You have four choices:
- Buy a standard Garmin vector-based map, like Topo 2008 or the new 1:24K Garmin maps
- Find a free vector-based topo map on this site, or elsewhere
- Use the program Moagu (
http://moagu.com) to convert raster maps into Garmin vector format. Works, but display speeds are slow.
- Use the program MapWel (
http://mapwel.biz) to convert raster maps to vector format. Works, and display speeds are faster than Moagu for many maps. But for very detailed maps, and aerial photos, display speeds are a lot slower and detail is lost in the vectorization process.