Hi Zen'ers My first post after downloading and installing the cart on a local test machine. All cool so far!

I would like to have an additional page added to the checkout process. When an order is placed, in this case all orders are actually bookings for shore excursions, we need additional information that is order specific, not customer signup specific. So I would like to be able to pass the order number to an external page that accepts the passport information for each member of their order group.
My question is, how is the best way to pass the order number parameter to the external page and return back to the cart with the session maintained for final success page. I created a passport entry form that works against the cart MySql db ok and it accepts manually added post variable for order number but when returning the order process does not complete.
Any suggestions or ideas or examples for passing parameters to external forms and returning again to the cart to complete the order would be greatly appreciated.
Thank you
Stan