Convert Excel to Amazon Feed

I have an Amazon Webstore and will need to upload a lot of products. Currently my company has an excel feed which is updated frequently. I would like to have a program/script that can automatically convert my excel into a Amazon Webstore compatible format. The Amazon Webstore format can be quite complicated as it has category and material annotation that is only specific to Amazon.com. I need the script to be able to add the appropriate attributes to the Amazon feed. This is my company feed: [login to view URL] It will export an excel of the data we currently have. However, I know the information in the file is not adequate for the Amazon feed. I can have new columns of information e.g. EAN numbers added to the excel file Bidder MUST understand and go through Amazon's "Upload Inventory File" documentation [login to view URL] I will need someone who HAS worked on this before because you will need to let me know what else I need to add to my Excel feed. I can request need columns to be added to the excel. The end product which I envision is as follows: I will input an excel into the program/script and it will export a [login to view URL] Inventory File which I can manually update my Webstore. I expect the winner will be helping me work out what are the necessary information required by Amazon and tell me what columns I need to add to my excel.