Integrating CS2007 with SP2007

Quoted from the reply of Xavier Ravi
http://meiyinglim.blogspot.com/2006/10/integrating-microsoft-commerce-server.html
Step by Step Configuration tasks and sample code
http://www.microsoft.com/downloads/details.aspx?FamilyId=2AEB1A5E-43B8-483B-8CB2-86C0E82BF0AB&displaylang=en