Hi Craig. I received your email. We are still in the same boat. I have inquired for help with a programmer friend and this is his response to the problem.
"Can you run perl scripts on the server? If so, I think I can do this. I found some cgi scripts which will read and write form data to a database file in CSV format.
Since (I assume) there could conceivably be multiple orders taking place simultaneously, the database would be necessary (instead of a single file posted). We can tag the DB entries with the order number so that they can be retrieved. The fields in the DB would be the hidden input values. The database can be hidden on the server at any path location using chmod. I'm not exactly sure how to pull the .php files back into this, but I can figure that out."
I know, sorry not much help. Please let me know if you find a solution for this!! Much appreciated!!!!