1. Log into the SuperAccount Customer Control Panel with the main account's username and password.
2. Once logged in click on the "My Account" link on the left hand column.
3. Click on the "Billing" link.
4. Click on the "Payment Method" link.
5. If you're billing password is different than your main account's password, type in your billing password.
(NOTE: If your billing password is the same as your main account's password, you won't be prompted to log into the billing section.)
6. Fill in your new credit card information and then click the "Update" button.
7. You have now successfully updated your billing information for your SuperAccount.