If you have PCW 2003, you can take advantage of the substock items by creating a master item and attributes for your substock items:

A substock item is an inventory item that is automatically created from a master stock item. The master stock item has two attribute sets: primary and secondary. When you save the master stock item, substock items are created based on each primary and secondary attribute set. For example, say the master stock item is a T-shirt. Its primary attribute set might contain all the different colors that substock items come in. The secondary attribute set might contain all the different sizes that substock items come in.

Once the master stock item and its attributes are saved, Peachtree automatically generates a number of substock items based on the attributes. For example, substock items based on the T-shirt master stock item would combine the color and size attribute sets outlined above. So, for example, you might have substock items that comprise small, medium, large, and extra large T-shirts in white, green, black, and every other available color until all combinations of designated colors and sizes are exhausted.