Is there a way to modify the payment workflow (Cart -> Address -> Shipping -> Payment etc) from within a payment module, without altering the nopCommerce source?

I am trying to develop a payment module similar to PayPal standard (redirect to an external payment provider, then redirect back to the e-shop) but the Payment and Confirmation steps seem to be superfluous, they show no new information and you just have to click a button to proceed to the next steps.

Thank you.