XML API Expert Needed: Amazon, Sears, Newegg XML Feed

I sell products on three eCommerce platform: Amazon, Sears, and Newegg. They all offer the ability to do an XML feed to update inventory, process orders, and give order shipment confirmation. I have no knowledge what so ever on how to set-up an XML feed to these three platform. I need a XML Freelancer expert to have this set-up for me. Currently I have been doing it manually through Visual Basic Scripts in my Excel that process and exports out the correct format to feed these three platform. Moreover, I want to speed-up this daily process by having a central based that will automatically feed these three platform. Please write the word "xml" in the bid and message to inform me that you have completely read this entire project. I am looking for someone long-term as I will always be needing adjustments or new projects relating to XML. The person with the lowest bid, and most qualified will be awarded the job. Here's the documentation information for Amazon, Sears, and Newegg. Please download XML [login to view URL] and read the documentations.