The one Age posted is a bgl file and this will show on your gps where the unlisted strips are in the Orbx NZNI scenery. If you don't use that scenery don't bother with it. If you do, just download it and place the BGL file in this folder
"Your flight sim root folder" / Addon Scenery / Scenery
Next time you run the sim it will rebuild the scenery database and add all the locations to the GPS.