Good advice, the voice of experience from an old, pre 3G, wi-lan signal thief, right? ;>)
Lets see... driving through a neighborhood in your rental car, preferably a nicer neighborhood, trying to look inconspicuous, with your 802.11 antenna on the dash and your laptop on the seat... searching for a signal...
I use to just go to a La Quinta and sit in the parking lot, but then they started adding network security and passwords, etc. No fun.
Just a little "On Topic" Telecom history...
Later and Best, bulldzr
"So often times it happens, that we live our life in chains, and we never even know we have the key."
-The Eagles