No, this will not work.
Yes but not your save files
yes, you can play DLC that was downloaded on a Xbox LIVE profile and play it on a non Xbox LIVE profile
yes.
The number next to your profile is the number of years that profile has been on xbox live.
If you have a Xbox live Gamer profile, you can just recover it on the new Xbox. If you are not online, you will need to buy a transfer cable.
Membership is linked to your profile.
Get a USB, go to your old Xbox, and plug it into one of the two USB ports in the front of the Xbox. Go to "Systems Settings" Under "My Xbox" and click that. Then go to memory, and click Memory Device, then click configure, then go to your Hard Drive, and go to User Profiles, then click on your profile, then click transfer to Memory Unit. Then take your USB, then plug it into one of the USB ports in the back of the Xbox. Then just transfer your Profile from the USB to the Hard Drive.
Unfortunately, Facebook will not let you switch back from timeline to the old "wall" profile. :(
if you want back to the old bebo you just go onto your profile and there should be a little box at the side saying " no likey " and you just click that and it will take you back to the old profile its simple
To add a profile to your xbox 360 u just go to add a profile or make new gamertag its pretty simple
nope, as soon as you have confirmed that you will have the new profile, it automatically changes; sorry