Try this and see if it helps goodluck http://www.xbox.com/en-US/support/connecttolive/xbox/default.htm
No, the setup for xbox live is a fairly simple and straight forward process.
no
No there are only a few stages.
Microsoft does not sell regular Xbox Cards.. Just says "XBox Live"
nope
you cant Microsoft doesnt want people on the regular xbox using xbox live on the original xbox.........
You carnt because you get signed out of xbox live when you go on a regular xbox game
yes it does i have cod 1 and it works for live
Go to Inital setup and that will start u up all over again
Yes.
no
Firstly connect your Xbox 360 to the internet via wireless or wired. When you have done this, you will need to sign up for Xbox live, this is on the dashboard, something called join xbox live. Go through the setup and you will you will be live. You will need a Xbox live gold membership to be fully online.