How to set up shopping carts in Flash?

Hi all,
Im currently building a site for my airbrushing business in Flash. I want to be able to sell my Tshirt art on the site. Ive looked into ecommerce software from a few places that look conceivable. Something like
I can use something like that which is actually a plug-in for Dreamweaver. I’d rather have the shopping experience in Flash, instead of having the whole site in Flash but then directing the user to an html page to order the merch.
Is there a way to do this in flash? Im pretty well off on understanding and writing simple AS. If anyone has any input it would be greatly appreciated.
Any 3rd party software u can recommend and different approaches to this would help me greatly.
Thanks everyone