radical hacks Pre-Registration with WebStore sent in the following note and hack
The site I am using the Web Store on has a separate registration process. I do not want to bother them with re-entering all the information that was put in to the registration form. I have modified the Web Store so when they place an order they just put in a username and password.
This is processed in the web_store_order_lib.pl immediately after the checking of required fields and before the completion of the order process.