Most people will say yes, but technically no. Some games like endwar has a voice recognition, meaning that you can order you squad over your voice.
The main function of the headset is to speak with people over Xbox live.
No. You will need to register and buy Xbox live.
Yes you just need to plug them into your controller and you need xbox live :D
You will need to be live but I think you can be a silver member to do this.
You need to connect your Xbox with internet and Sign up
well you never need Live to play Xbox games on the 360. All you need is a hard drive for your Xbox 360
Yes You Do
I think you do have to pay for the xbox live, however it will need to be by credit card on the official xbox site. but i do think that the codes are interchangable between original and 360. however you cannot directly use a xbox live 360 code on the original xbox, you will need to redeem it on the xbox 360.
No.
no but xbox live will work on xbox 360 live you said that rong you mean xbox live works on the x box 360
Xbox live cards work on both kinds of xbox.
You need an adaptor to play xbox live.
to connect to xbox live you need a router or a modem