There are a couple of ways that you can use the select list to add options to the cart. You can populate the select lists from recordsets and set the value to what you would like to see in the cart. For example, if you have multiple sizes you would have a recordset on the page to select all of the sizes available for that item. You would then use this recordset to populate your size select list.
Once you have done this you need to ensure that the value of the select list is set to the name of the size. This should be all that is needed to setup the size select list. To make it add to the cart like this you will need to ensure that the select list is within the add to cart form and that you bind this select list to the size column in your cart.
If you have options that will alter the price of the item the approach will differ and will require some more recordsets to work properly. Please post back with any questions that you have about this and let us know how exactly you would like the options to work.
