I need to import 7000 products from a product feed from my supplyer into a new Magento store. The products have attributes (shoe size etc.) and the feed is not right for Magento. So the feed needs to be adjusted so it will work in Magento with stock control pr. attribute (Configurable Products). We can import as simple product, but are not smart enough to adjust the file som it works with Configurable Products. Can you help us?