Require a Virtuemart module that will allow us to control inventory based on the 3 attributes (type, length, and color). But I would like to be able to easily add more (up to 10) in the future. I would like to be able to apply the inventory control to certain product categories (perhaps based on the flypage that the category uses). The customer will select a type, length, or color from the dropdown boxes. If the combination is not in stock, they will immediately see the quantity go to 0. If the customer attempts to place the item in their cart they should get a pop-up box that says "The options you selected are not in stock" and not be allowed to place item in their cart. There is currently a similar Virtuemart extension that can be customized at [url removed, login to view] I am attaching a copy of the module. However, this module only supports 2 attributes and it also changes the photos as you make your selections. We do not require our photos to change as customers make their selections and we do not want our flypage to change as a result of using the customization. Also, we require detailed installation and uninstallation instructions.