If you look on this link - http://www.softrak.com/resources/links/developers.php - you will see the third party developers, and you can link to their own websites

Virtual-Vendor has a product that does EXACTLY what you are looking for. Bravo Software has software that can handle your request as well.

Never having installed either of them, I would shy away from offering my opinions. Maybe others who have had successful or unsuccessful experiences can chime in.

I can tell you that it is orders of magnitude easier and cheaper to connect a retail website to Adagio OE than a business-to-business website.