Barclays EPDQ (yeah I know!!!)

I need some help with a checkout process.

The client insists on using the Barclays EPDQ (Kuroi v1.5 module) and no matter what I say they won't budge.

For those of you who don't use it, the page that goes to the secure checkout page (main_page=checkout_confirmation) has to be a static url so no zenid!

Which you would think would be simple, turn on Force cookie use, but the site is hosted with a shared ssl, so I as far as I'm aware I can't set the cookie as when a customer goes to the secure site it has a different url to the main site. :frusty:

So my idea is to create a page between the checkout confirmation
and the EPDQ site.

This page would be a simple page, which automatically forwards onto the EPDQ, but doesn't have the zenid from the url.

How does this sound?
Am I on the right track?
Any other suggestion are welcome!