ok i want to change my xbox ids i have two xboxs and want to swithch there ids ok you are probably dont understand what i mean so lets say hypothetically my xbox was banned from live but i have another one that has never been online before what do i do to get the first one back online?

Are both xboxes modded? If so all you need is Config Magic and ftp access to the xboxes.

only 1 xbox is moded

You need to throw your chip in the other box as well to retrieve the eeprom.bin, and ftp to/from your pc