Client is looking for a shopping cart program built in ASP that will work by sending a datastring (Via a Form Post) from ANY server with permission to do so. The front-end code like the inventory database edit tools etc are NOT needed however the back-end code will need to function using SQL databases.
An admin panel will be used by the client to create,edit delete an "Account" for a shopping cart including some method to determine if the posts are coming from the domain that has registered for the shopping cart (Important to check the legitimacy of the post) The account will contain the basic client information name company name address domain etc... The shopping cart side will simply take the form post of the domain like ItemNumber, Item, Price, Shipping method chosen by the Shopping cart client, Account # etc.... Basically we will give the client a tool to generate the html code to drop in to their webpages. (Just like Pay Pal does) after it is sent to the "Shopping Cart Server" it processed to provide the totals, invoice email the client and the shopper the order. The client side admin will have a place where they can configure how they want to configure shipping, process final payment either by PayPal and one other easy approval merchant or just have the order send to them to process the order also to calculate shipping using realtime UPS as an option or based on the total weight or total price etc.... Basically all the normal functions & Options of a shopping cart back-end and the look and feel must be professional and configurable.