Fong, You have a few resources available to you: - Migrating from Site Server to Commerce Server 2000 http://www.microsoft.com/commerceserver/techinfo/deployment/2000/wp\_sscemigration.asp - CS2K Product Docs: Migrating the Membership Directory http://www.microsoft.com/TechNet/prodtechnol/comm/proddocs/cs2000/cs\_gs\_membershipmigr\_oaak.asp - Membership Migration tool in the tools section of the Commerce Server 2000 SDK Cheers! Colin