Shipping Rate Widget

I require an online Roadway shipping rate calculator for my website. We need it to be widgetized so that it comes with embed code for easy online distribution. It must not link away from our site. My website uses the volusion shopping cart. [login to view URL] For example go to [login to view URL] Add a product to your cart then view the cart on the following site. [login to view URL] Then look on the right sidebar for the following heading. Estimate Shipping Cost The unbranded rate calculator needs to get quantity, discount, location, weight and dimension information from the Volusion shopping cart. Needs to display the weight then the form will ask customer the following shipping questions Zip Code (prefilled in from the customer information in the cart.) Type of Delivery? Residence or Business Do you need liftgate service? Yes, No, only for over 150 lbs. Return customer to cart page with shipping total added into the grand total on the shopping cart checkout page. It is better if we use ajax to minimize page reloads. I appreciate anyone that will help with this. Please let me know your availability.