Convert HTML webform from Paypal to Skipjack

Present HTML/javascript webform collects a variety of information for membership application. It is curently set to post to a php module which parses out the dues amount from a list, submits the full data stream to the home office via email, and submits a subset of data to Paypal for credit card processing. We are dropping Paypal in favor of Skipjack. We have a developer version of the Skipjack form and the original HTML and PHP modules. We need a replacement PHP or other re-engineering to give us the desired Skipjack form filled out with name, address, amount information. We will handle redesign of the screen references to Paypal in-house.