Ricky,
I replied to your PM a little while ago, but since this is a question that may apply to many members I'll give some info here as well.
The PayPal MasterCards are debit cards tied to your PayPal balance. Therefore, they cannot be used via PayPal to make a payment. You can, however, use the PayPal MasterCard via our 2CheckOut payment option if you have sufficient funds in your PayPal account OR a backup funding source attached to the MasterCard.
Note: 2CheckOut transactions include a manual verification process, so accounts will not become active immediately after payment.