Si, yo tengo el mio y el de mi novia en mi desktop. Ahi abajo te lo pongo, si necesias traduccion me dices y lo traduzco rapidito.
In Windows XP:
1. Right-click on your desktop and select "Properties".
2. Navigate to the "Desktop" tab and click the "Customize Desktop..." button.
3. Navigate to the "Web" tab and click the "New..." button.
4. In the "location" box, type "http://card.myGamerCard.net/[GAMERTAG].html" replacing [GAMERTAG] with your valid Xbox GamerTag.
5. Click "OK and Windows will retrieve the card for you. Press "OK" until you reach your desktop which should now have your GamerCard on it.
edit: gracias por la correccion de ".net" en vez de ".com"