Amazon Marketplace MWS C# Desktop Class

I need a C# class built with the following options using .net framework 4 for Desktop There are sample code in C# already to do this: <[login to view URL]> upload product to market place to be used in this fashion Amazon amz = new Amazon("username", "apicredentials", "secretcode", "anything else required to login") [login to view URL]("ASINCODE", "Price", "Condition", "Condition Note", "Weight", "anything else needed"); needs to have a retrieve Current Open Listings and add it to a listview [login to view URL](ref listview1); needs to have an editlisting [login to view URL]("ASINCODE", "Price", "Condition", "Condition Note", "Weight", "anything else needed) and finally an end listing [login to view URL]("ID"); I need this done by May 23 2011 Monday