The good news is that there is no URL change required for your customers. The collection of Event Information, Shipping and Asset selection are in an unsecured enviroment. It is only when your Users pass onto the Payment screen that they are transfered to a SSL enviroment for the payment transaction.
In fact depending on their personal browser settings they may not even be aware that they have transitioned into or out of SSL.If their settings do display this change they will see the pop-up above. In either case they are in a secure enviroment.
Tip: Your own staff may see a similar pop-up if they attempt to edit the payment screen from teh Project's Project Summary screen.
