Instructions
Turn off the console. Connect your Kinect or Xbox Live Vision Camera to your console. The devices plug into an open USB port.
Turn on the console and wait for the dashboard to load. Go to the "My Xbox" section.
Scroll right to the section containing your gamer profile. Press "A."
Select "Profile" from the list of account management options.
Open the "Edit Gamer Profile" option.
Choose "Gamer Picture." A list of gamer picture customization options loads.
Select the "Take Personal Picture" option. A picture-taking screen loads allowing you to preview the shot.
Select the "Take Personal Picture" option. An image displays on the screen previewing the shot of your Kinect or Vision Camera.
Select the button donning a camera icon to take the photo.
Select the "Accept Picture" option to save the photo.
Choose "Change Personal Picture" to use the photo as your gamer picture.