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How to change your billing type from a credit card purchase to a paypal purchase for windows store purchases (for windows 8 )
Right-click anywhere on the screen where an image or text hasn't been placed.
( you can also use a keyboard shortcut, which is. )
Look for and click the " your account " button, which should be at the very top of the screen.
Look for the section that contains your payment details. It should be labelled " payment and billing info " and shouldn't need any scrolling to find.