I'm trying to check the cart contents for a certain manufacturer id. Once I can do that, based on the result I need to update SHIPPING_ORIGIN_ZIP or leave it alone.

I have been working with
includes/modules/pages/shopping_car/header_php.php,
includes/modules/shipping/ups.php,
includes/classes/shopping_cart.php.
with no luck.


For now I would be happy with bare bones functional. I will work with it more later and get it hooked up to the db and being set from the admin.

Thanks,
John