Xbox Wireless Internet Adapter Can I Use Some Elses Wireless Internet Signal And My Xbox 360 Wireless Adapter To Pick It Up That Signal?

Can i use some elses wireless internet signal and my xbox 360 wireless adapter to pick it up that signal? - xbox wireless internet adapter

I bought a wireless adapter 360, and apt to live in a complex. Can I use your network signal wirelessly to the Internet to get my 360 with my new wireless adapter? I play Xbox Live, but cable internet is expensive.