Amazon.com Multi-Variation Listing using XML

Amazon requires XML to be used in order to have variations on a product in some categories. We need an XML file populated for us to show us how to properly link Parent/Child SKU's 1. You MUST have done this before, please provide example of a product ASIN in consumer electronics that you have successfully added variations to. 2. We are looking for two separate XML files that have the following variation sets (Style, Length) and (Color, Length). These will be for existing products as well as future additions. 3. We will require the XML files that you used to create the variations. 4. We need to be walked through the process to do this on our own in the future. Detail the exact process of which values to replace on the XML files, how to create the new parent SKUs, and how to upload these files to Amazon.