Otherwise, if you can only get secured networks then you need to get more sophisticated. Try googling airsnort for windows for more info.
The wireless net work would need to be broadcasting its SSID (Network Name) and be unsecured i.e have no password to log on to it.
Or it could have WEP encryption which is easy to crack or no encryption and no Network card Mac Address filtering as each network card has a unique Mac Address.
The only secure way is to employ Mac Address filtering, don't broadcast the SSID and use WPA, and Limit the number of Connections and even use Static IP (when you tie and unique ip number to each network card.)
Yes, you can connect to anyone's WiFi as long as there is no password on it. You will ALSO need a WiFi card in your computer, if you don't have this you wont receive the signal, if there is a password on the WiFi there are certain programs you can download that get around the password for you, if you have drivers in your wifi card. To connect to a wifi connection
On mac, next to the battery icon there is the "airport" icon, click on the icon and it should list all available wifi connections. On windows, open up internet connection, click on wireless connection then click search or scan.
Routers send out signals and they can not be controlled where they go. They go out in a circle all around for around 100 feet. If someone was to go in a car by the house and open up their wireless network you will see something like LINUX, 2WIRE***, MY HOUSE, and stuff like that. You will pick up from the signal that the routers are sending out. Most networks are password protected but can easily be broken into by typing in a simple password. I am not going to tell you guys the password.
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