Things You'll Need
Instructions
Press the Xbox button on the Xbox 360 controller to open the Xbox Guide menu. You can be on the Xbox Dashboard or playing a game when you do this step. It does not matter when using a free redeem points card.
Press left on the analog stick to scroll to the Marketplace tab in the Guide menu. This is the tab all the way on the far left end of the menu.
Select “Redeem Code” from the menu. Press the “X” button to select items from the menu. A keyboard will appear on the screen.
Enter the 25 digit redeem code from the back of the card into the on-screen keyboard.
Press the “Start” button on the controller or select “Done” on the keyboard to enter the code. The Microsoft Points will be added to your Xbox Live account.