In this video, we learn how to change your Gamertag on an Xbox 360 (Xbox 101). On the console, go to the 'my Xbox' channel, and then highlight your gamer card. Then, press 'a' and edit profile. Go to gamer tag, then press continue and change your gamer tag. If it's already taken, you will have to change it to something else. You will have to pay 800 points to do this, so make sure you think about it before you do it so you don't end up paying more and more to change it. This will change your gamer tag, enjoy!