Hello, i sell a product that comes in two colors. So i set the product options to offer two colors and everything works fine

...the only problem is that each color needs a different SKU number! i.e. If i add the white product to my cart, it should have a different sku number then the Orange product. Please help me figure out how to add different SKU #'s...oh, and please leave a very user friendly reply...(i suck at technical stuff

). Thanks a bunch.