i got my wife a tomtom for xmas. i used to go out with my dad when i was younger and search for caches. all i have is a tomtom 340 xl s gps for the car. can i still hunt for them with this unit? ive tried looking it up, and everything says gsak, but i dont get how any of it works. i apologize if this is a post that occurs often, and i s a nuisance, but any help is greatly appreciaed.