MacAttack, don't forget to update your "GamerTag" associated with your "XG Profile" & request a new Username via the HelpDesk.
To update your "GamerTag", click "About Me" on your profile (directly above), click the yellow pencil next to "GamerTag", update it, then "Save".
To request a new Username / Login Name, click "Help Desk" in the top right corner, click "Request Login Name Change", type your new GamerTag, then click "Request New Username".
To update your "GamerTag", click "About Me" on your profile (directly above), click the yellow pencil next to "GamerTag", update it, then "Save".
To request a new Username / Login Name, click "Help Desk" in the top right corner, click "Request Login Name Change", type your new GamerTag, then click "Request New Username".