1) it looks like you haven't uploaded: "webassist/forms/WA_SameAs.js"
2) You will just have to update the "Store Cart Details in Database" server behavior on the confirm.php page.
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.