You need xbox live to get him, but you don't need it to use him
The death cards are in the normal campaign as well as Xbox Live. I have only tried to get them on Xbox Live, but I know for a fact that you CAN get them NOT on Xbox Live.
You can not. Live is for the Xbox 360 and only the Xbox 360
The only way you can be in multiplayer you have to get xbox live account then you have to get xbox gold for it (-you have to buy it) after you get xbox live you can add your friends but they have to have xbox live and xbox gold to play with you.
im pretty sure gateway is a computer...XBOX live is for XBOX 360 only
ONLY x-box live needs internet
Only if you want to shop in the xbox live marketplace.
I don't understand your question. Which Xbox 360 you use has nothing to do about Xbox LIVE. The only thing that matters for Xbox LIVE is your internet connection.
yes its only used for xbox live to send pictures of you to your friends
The adapter connects you to Xbox Live but only if you have a wireless network and if you have a Xbox Live subscription.
Nope, must have 2 live accounts
No. Xbox Live is only accessible using an Xbox 360, and no information goes to your computer.
It will only be on the LIVE marketplace not in the store.... (no xbox live gameplay) (but you need the original game to play it)