We require a payment module to be written and tested and supplied for Secure Trading's XPay product. [url removed, login to view] "ST Xpay is our service for merchants who want to use their own secure servers, but who wish to use SecureTrading's payment network as part of their own e-commerce application. It has all the capabilities of ST Payment Pages, but in addition you can use our service in a more sophisticated way. For example, you can: Automate refunds and authorisation reversals, and control the settlement schedule for each transaction. Have development capability and write applications that can process payments Integrate a payment solution into back-office or legacy systems ST Xpay is based on XML, for maximum flexibility and ease of use. The user guide is attached and we have more documentation for the succesful bidder.