Yes
Xbox s has wifi adapter in it the normal one you have to buy one to use wireless
yes you can
Yes
Yes, it is possible to use a laptop as a wireless bridge for xbox live.
Your router WILL need to be wireless to connect wirelessly to your Xbox, but you can use an ethernet cable if your router is not wireless, straight from the router to the XBOX
Yes. Otherwise how would it connect to the internet?
Yes
The Xbox 360 Wireless adapter uses standard 802.11b, 802.11g, and 802.11a connections. If your Mac has an AirPort wireless network card it will be able to connect to the Xbox network.
depends if you want to play online
Not that anyone knows of. Microsoft is pretty firm about wanting you to use ONLY Microsoft products with their systems. Sorry.
no only the xbox ones work unfortunatley (since its easy to find cheaper adaters for computers) i tried the one i use for my computer and it didnt work so went and forked out for the xbox one. However, you can use the wireless adapter from the original Xbox with the Xbox 360, even though it's not officially supported.
The Xbox does not include any wireless hardware, so without an adapter, it cannot use a Wi-Fi connection.