IMPORTANT! PLEASE READ THIS!
To pay via PayPal, simply fill in your invoice number (leave it blank if you don't have one or don't know it) and click the Pay Now button. You will then be taken to PayPal where you need to enter the amount to pay in the "Item Price" field. Click Update, and then you will be prompted for your credit card info. All data is encrypted once you are on PayPal's site so it is safe and secure.
Before proceeding, please read the previous paragraph!