yes
you don't. it's linked to your hard drive on your Xbox so to get a new profile you have to make a new account on live.
No, because your profile data is stored on their servers, not locally. :( someone will figure it out, they always do. ;)
call xbox live support and ask for a new profile and a year membership of both zune and xbox live gold.
You want to format your hard drive, thats all you need to do to erase everything stored. Take all precautions to transfer files you do want to keep on another drive. This is also a last ditch resort if you have a virus you cant kill. http://lifehacker.com/157578/geek-to-live--how-to-format-your-hard-drive-and-install-windows-xp-from-scratch
You cannot recover profiles on Xbox 360 if they have never been on Xbox Live. The profile has been deleted from your hard drive, memory card or memory box, and therefore nothing had your profile saved outside of your console (meaning besides your hard drive, memory card or memory box). Your profiles are only held by xbox.com IF you have the account online (on Xbox Live). Sorry but you should have thought ahead before you deleted it.this happend to me too. i didn't mean to do it, i just got told that there was an update so i updated. next thing i know i have a new profile with all my game data wiped :(
Yes.
Yes.
Yes, you can. Simply remove the hard drive then insert your new one. Unless your Xbox LIVE account is on the old hard drive, then it will not affect your Xbox LIVE experience. If your account is on the old hard drive, you can move it by selecting it inside of your Storage settings, then hitting Move. After that, just choose your new hard drive and the transfer will begin.
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, however you can buy the game from xbox live marketplace and the game will be on your hard drive
yes, you can play DLC that was downloaded on a Xbox LIVE profile and play it on a non Xbox LIVE profile
No you dont need a hard drive though you may want to consider getting one at least 65GB cuz xbox live downloads 10-30MB's an hour.