depends . you can have horrible connection and still be on but lagging everone else . so any but stronger is better ..
No, Kinect plugs into the console directly. Wifi is just a nice benefit for internet connection.
You don't. If you have the new Xbox 360, you don't need a wireless adapter because it has built in wifi. But if you have any other Xbox 360 console then you will need a wireless adapter.
you need to buy it. just go to walmart, and they have an entire box of the items needed for xbox live.
NO. Only the new Xbox360 slim console has Wi-Fi
You have to buy a wireless adapter. You can get them from best buy, walmart, gamestop, etc. and they are 100 US dollars