Does anybody know how to set up product variations using Fancy Product Designer?
I.e. Different color t-shirts of the same size
You want to set up Product Variations.
EG You may have a T-Shirt that comes in various sizes. The TShirt is the product, however the variations are Large Medium Small. They cann all hold the same SKU or you can modify the SKU for each variant
More info here http://docs.woothemes.com/document/product-variations/