I've searched Google and the FAQ section and I can't seem to come up with any answers.

I'm trying to set up products that have different product and shipping weights. For instance, Product A's product weight may be 1lb, but the shipping weight may be 2lbs.

In Categories/Products (edit product) I can set the shipping weight. Where would I add the product weight? And how would I set up the different product and shipping weights for a product. For instance, Product A may have 3 different sizes (1lb, 2lbs, 3lbs) with 3 different shipping weights (2lbs, 4lbs, 5lbs).

How and where would I go about configuring my products in this manner?

Thanks guys!