When you get a chance, here is how you update your username to match your XBL gamertag, Thanks!
XiledGaming.com username change to match new gamertag:
Either view your User Control Panel or view your Private Messages. Then on the left side, which is your User Control Panel, scroll all the way to the bottom and you will see a link called "Request Username". Click on the link and the page will load for you to submit your new Username. Fill in the new name you want and click on the Request New Username button. If the name is not allowed, such as the Username is already taken, then you will need to try a different name or submit a request is the Help Desk for forum problems. Once your name is approved/disapproved, you will receive an automated private message.
quick link: http://www.xiledgaming.com/forum/profile.php?do=requestusername
XiledGaming.com username change to match new gamertag:
Either view your User Control Panel or view your Private Messages. Then on the left side, which is your User Control Panel, scroll all the way to the bottom and you will see a link called "Request Username". Click on the link and the page will load for you to submit your new Username. Fill in the new name you want and click on the Request New Username button. If the name is not allowed, such as the Username is already taken, then you will need to try a different name or submit a request is the Help Desk for forum problems. Once your name is approved/disapproved, you will receive an automated private message.
quick link: http://www.xiledgaming.com/forum/profile.php?do=requestusername