It occurs to me that any real-time cc system is going to have to be very modular in it's implementation anyway. Given that the reg_system code changes on a weekly basis nearly, you could spend your life continually updating your code. It becomes especially difficult when the payment system provider is a standalone system, like PayPal, which at least provides a return link to bring people back to your site. It get even more complex to deal with when you have to transact bulk orders as well as single orders, and orders with mixed prices - all from the same source perhaps. I see many people recently commenting that they were sticking with the 'vanilla' interface for that very reason. bc
