I am running Zen Cart 1.3.8

I would like to know how to add different QTY's to my products for each colour / size.

I found an add-on called "Stock Attribute" by Danielcor but am unsure if it will run properly on my version.

Does it? Or can someone tell me how I can add my different QTY's to my verious product attributes in another way.

I sell lingerie and I need to be able to sell verious sizes and colours while keeping track of the stock I have.

I have looked through the FAQ & Forum and have not found anything.

Please help...