- Login to your account.
- Select the My Account button which can be accessed via the Welcome drop down (top right-hand corner of the navigation menu).
- From within the Billing section, select Add New Credit Card.
- Complete the various fields within the Add New Credit Card section.
- Select if you want to use one of the existing addresses on file or add a new billing address for the new credit card.
- Click the Submit Payment Information button to save these changes.