We haven't done it, so the way to go would be to follow the ePDQ documentation. Integrating our cart into any payment gateway is usually pretty easy once you understand and have the implementation to the gateway working in general.
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.