Thanks Ray - Can you explain this a little further? when would the checkbox return the filtered recordset? When the add to cart button is clicked for the main product? So would it filter and add to cart at the same time basically?
Also, another question: How can I get the shipping charges to show up in the cart? I have the power store solution and the shipping charges only appear on the confirm page. The shipping amount is a flat rate and not based on any session variables.