I just got my Garmin eTrex personal navigator. I don't have the slightest idea how to geocache with it,if indeed it will?? Is this too cheap a unit to geocache with? I have taken it outside to get the satellite signal,and have the ready to navigate signal, how do I enter a coordinate to get started? I am technically challenged,but I sure am ready to get started. Please help if you will. Poppop