I have been reading thru all the posting but I can't find anything that exactly works for this situation. I have 3 items - Product, Prod Description and Product Size. There are multiple product descriptions and multiple product sizes for each product. I have the first combo box set so the user can pick the product. Since it has multiple descriptions, the next box is a list box with all the Descriptions for that product. The list box will update based on the product selected. Now my problem... I have the 3rd box (combo box) for the size. The size is based on the product and the product description select. I cannot get the third box to work! I can't figure out how to base it on the results of the prior to boxes. Any ideas?? I would be extrememly grateful!!