I am an absolute beginner at Geocaching and have been given a brand new Garmin eTrex H handheld GPS Navigator as a birthday present. I was also given a RS232/USB cable to allow me to connect to my laptop. Alas the handheld does not have a USB connecting port, instead it has a flat pad with four round brass terminals.

I have searched the Garmin site and Amazon, where my wife purchased the kit, to find a suitable connecting cable but alas I am now even more confused that before. My wife appears to have looked at Amazon, selected the handheld and then assumed that the cables advertised were the correct cables.

Could anyone tell me what would be the correct adaptor or cable and where to buy it.

I purchased "Geocaching for Dummies" and while it certainly has given me a better idea of the hobby, I don't live across the "Pond". Are there any suitable books/publications to suit the UK brand of English?