If you add the shipping to the confirm_cart.php page after running the eCart 6 checkout wizard, then it will automatically recalculate using AJAX during checkout.
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.