How can i import GTIN/UTC/Barcode for each product?

I must say that your product deserves some better publicity as it worked perfectly the firsttime!!

I am interested in the premium plugin but I need too know the following:
1. Is it possible to import the right GTIN for each product? If yes, how do I set that up?
2. How can I make sure each product is also imported to the right category? When I tried it out, it did not import products to the categoories