NO
Yes you have to pay money for another xbox live account but you have a one month free trial with a new gamertag.
Yes, all you have to do is buy another card for it and add it on there.
It means that you are banned from any online access and you will have to buy a new xbox 360 to play online again. Your gold membership is erased from the xbox and you will have silver until you purchase another xbox then I think the gold membership will come back.
You are allowed to create another account if you obide by the Xbox LIVE Code of Conduct and Xbox LIVE Terms of Use.
yes
Call Xbox. It can be a variety of things.
No, just recover your gamertag on Xbox Live.
You would have to recover your gamertag onto your xbox 360 console again.
No
you can play the downloaded content on another gamertag on the same console but if u put your harddrive in another xbox the original dowloaded gamertag must be signed in a to usse the content :)
Yes it will work fine.
Sort of. When you connect to Xbox Live, you get one free month of the Gold subscription. After that you have to buy it, or make another account.