Hi Guy,

This is actually a bug/limitation in dnn when you redirect to another user control using the NavigateURL function dnn applies the admin skin instead of the portal skin even though all the pages in the checkout are view controls and not edit controls dnn still applies the admin skin. As a temporary solution you will need to set your portal and admin skin to the same skin temporarily if you want the same skin on the checkout pages. We are evaluating programmatic solutions for this one of which is to make the cart/checkout a separate module which will also allow you to only apply ssl to the cart checkout pages and not the product list page.

Thanks,