Garmin Chirp

OK, so while I was not taking down a phishing mailing list I was actually playing with a Garmin Chirp (http://www.engadget.com/2010/10/15/garmins-23-chirp-wireless-beacon-brings-geocaching-thrills-to/).

I want to be able to locate these little buggers, break the password (no password lockout - thank you garmin) and reprogram them, possibly physically reposition them. Might need a better directional antenna, and in the right frequency range instead of just close enough...