Are you referring to the PowerStore Demo site? Was it a flat rate shipper you were looking at? Please post back with the details about the example you are referring to and I will be glad to help lead you in the rite direction.
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.