I did use my neighbours internet lines for 6 months without asking him! Its not hacking... Its borrowing :moon:
All you need is an wireless card to put into your computer.
Then start searching.. The card will find the nearest spot (if there are any) and it will either closed with an password or open for use. If its open for use, then just click yes and it should be ready tp go online...
the best tool for probing is either netbrute or ethereal
ethereal will show you the available ports to connect on, you will need to change your IP settings to how you connect to the internet, this can be done in network connections. once you have done this you would have bypassed the encryption and will then authenticate a handshake to their WIFI