So, if you have been wanting waiting to use Office SharePoint Server 2007 in conjunction with Commerce Server 2007, this is the whitepaper for you.

http://www.microsoft.com/downloads/details.aspx?FamilyId=2AEB1A5E-43B8-483B-8CB2-86C0E82BF0AB&displaylang=en 

This document covers the topics needed to take Commerce Server data and services and make them visible in portal sites based on Office SharePoint Server 2007. Samples are provided to show how to make custom Web parts that access the Commerce Server APIs.

Happy Reading!