Convert Suppliers product feed to opencart

I am looking for an excel expert who can convert my suppliers product feed to an opencart product feed, All variations (Colour Size) must be correctly linked up in the file, There is 5000+ products with many colour and size combinations. My suppliers file comes in full data then split down into product groups, Colour and sizes. All size variations and colours must be linked together to make the options in opencart . I am using a mod to manage product options (Related Options Pro) This comes with its own excel file to upload to opencart. I have a sample file if you need to see the data before hand. Please contact me if you are unsure about any of the requirements before placing your bid.

Many thanks