Did you ever gat this sorted? I'm doing a PS4 integration for a client at the moment and will be amending PS to use Worldpay so I may be able to help.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.