no you need an ip address
Yes, the kinect can work with or without Xbox live.
No, you can play on Xbox Live with or without Kinect. Kinect only adds more features to Xbox Live. It is not a requirement.
Yes, you can play firefight in Halo 3 ODST without Xbox live.
You can play any online game without Xbox live.
yes its only used for xbox live to send pictures of you to your friends
You do not need xbox live to play Tom Clancy End War. Xbox live is only necessary if you wish to multiplayer.
i don't fully understand your question but if your talking about playing a game that says you can play it on live but you want to just play it without going on live like a career mode or something then yes. But, if your asking can i play my game on live without being conected to live then no off course not. Also some games allow you to play games that are live games but you don't have 2 be on live so you can play some live games without being on live but you won't beable to play against acual people or talk to anyone.
you dont have to take down your firewall to get on xbox live
Yes. You can purchase the disc and no Xbox Live is required.
no
no
You don't need a computer as long as you have internet to hook up your Xbox to you will be able to play Xbox Live.