Yes, u have to create a regular hard drive account (HDD) and then sign in with it. After thats done u will need internet and then go to my xbox and go to your profile, then click join xbox live. Follow instructions and you are ready to go.
no
yes it can
Yes.
No, and if it was possible what would be the point of buying and Xbox 360 anyways, besides the point of live? You can play a lot of regular Xbox games on the Xbox 360.
yes it does i have cod 1 and it works for live
Yes you can. All versions of the xbox 360 are compatible.
Yes,Beacuase Its STILL xbox live
You carnt because you get signed out of xbox live when you go on a regular xbox game
Yes, because you are not signing up for xbox 360 you are signing up for xbox live!
You need to connect your Xbox with internet and Sign up
if you have a hard drive you can play the xbox game's
if by modded you mean a flashed then yes but evan if you are playing official xbox 360 games you can still get banned from xbox live