Configuration of Virtuemart that is integrated in to a Yootheme templated website

Configuration of Virtuemart that is integrated in to a Yootheme templated website. Using Joomla 2.5.9 and virtuemart v2.0.20b. We already have an outline of the website and the shop created and are presently inputting products manually including child products and custom fields. We would like to find someone who can create a way to import supplied Excel files from suppliers in to the existing website. Each supplied Excel file may be different as they would contain different fields, so a way needs to be found to unify the Excel files that can then easily be imported in to our website now and when new Excel files are supplied from suppliers that include price changes, new season ranges and new products. The Virtuemart website pages include:- Product Name Part Number Product Title Description (Inc Specification, Colour, Dimensions etc) Tax Code Price Created product options Option SKU Images (Some have a few different images) Full instructions will be given at the start of the project. Accuracy of the data is essential, no spelling mistakes or typing errors.