When you click Continue, you will be directed to the PayPal site where you will have two options:
If you pay with a credit card, you'll need the "security code" from the back of the card, not just the card number and expiration date.
Note that if you
you will need to choose both a credit card and an e-mail address that are not registered wtih PayPal to complete the payment. For instance, if your PayPal account is tied to your home e-mail address, use your work e-mail address when asked where to send the acknowledgement.
Thanks!