Instructions
Turn on your Xbox console and sign into Xbox Live.
Press the "Power" button in the center of our controller to bring up your Xbox Guide window.
Click to the right with the four-way directional button until you reach the "Settings" tab.
Select "Account Management" by highlighting it and pressing "A."
Click to the right twice to reach the "Your Information" tab.
Select "Windows Live ID" to view your current email ID. The email address will be on the right side.