Shorten the shopping cart process

How can I reduce the number of confirmation pages are in the shopping cart? We are using the singe-step shopping cart but it still includes the shopping cart, a confirmation page, and a thank-you page. For our use, all we really need is the initial shopping cart where we can confirm the address and hit “submit.” Does anyone know how to remove the unnecessary pages?

The reason we don’t need the additional pages is we are using the shopping cart as part of our order entry system. We hate the actual order entry process as it’s not very user-friendly, so we created our own entry system that then pushes all the information to the shopping cart so it can create an order and a new contact at the same time. The only part that slows us down is the fact that we have to triple-confirm each order at the end.

Does anyone have any ideas?