archiplanner

Hi, I am Archi from Ahmedabad, western part of India. I would like to be a part of the geocaching community. I have pretty good map collection for the city with accurate details. I have good handheld Garmin GPS and PDA+GPS phone and iPaq with bluetooth GPS. I want to create cache's for Ahmedabad. Any clues how to start on? Any help is appreciated. Thanks, Archi