I've posted a new package at https://openacs.org/storage/?folder_id=70462. We used this code to integrate our site with Barclays ePDQ (www.epdq.co.uk) system. When the user chooses to pay by credit/debit card on our site, they are redirected to the Barclays ePDQ site which takes credit card details and authorises the transaction online before redirecting the user back to our site. You must register with ePDQ to use this code.