Is a wireless network Key the same as the Physical address under network connection details?

Answer 1

No its not, that is the MAC address. I see you are on sbcglobal, if you have a 2wire router and haven't changed the key it is on the label of the router/modem between the [ ] it will be a 10 digit number.

If you have some other router, you need to set the key under the wireless security settings in the router. That is the key you then use on any computer you connect. If you haven't set a key, connect up with a wire, log in to the router, and set one.