Not sure if anyone answered you but to change your gamertag go to "about me" and click the pencil next to your gamertag. as far as the username on the site the request you sent in will be approved within a week or so. Also, since the forum link didnt work for you, just go to beautifulmechs profile and click on the dark ages icon they have. that will take you to the forums. post once in there and youll have the same banner for easy access.