since you're using google earth to pick your spots, simply mark those spots in google earth with appropriate name. they'll be added to "my places"
save my places to your hard drive as a .kml file.
then download poiedit from
www.poiedit.com.
open the .kml file in poiedit, and save as a tomtom .ov2 file. name it whatever you like and then load this file into the map folder of your unit. everything will be there exactly as you marked them.
just remember to delete everything from "my places" in google earth before you start.