oh ok, well the xbox is here now got it for £60 with 4x games and a controller. So your saying, get another xbox that has NOT been online. Switch the HDD's and then go online.
Then sell the first xbox with standard hdd etc. But proberly switch over the DVD drives.
Right I will give this a thought or two, and then give it ago, just a lot of money to be cashing out you see
Cheers mate