HI Jason .. below is a summary of the steps i took ..
- on the confirm.php page - added Data Form binding to checkout.php
- created a server validation name of ShipType - with a failed redirect of checkout.php ( is this what i need to do or do i choose one of the pre-existing server validations like HTTP Accept ?)
- added a validation show if msg on checkout.php if they do not choose a ship type
- selected the dropdown form element and clicked lightning bolt and bound to my server validation ShipType
result: all choices force you back to checkout.php and the msg doesn't show