Deploying the Web Parts
If you are deploying the Web Parts only (not the Solution Storefront), you must create a Web application and a site collection in SharePoint 2010 before you deploy the Web Parts. In addition, you should extend your SharePoint 2010 Web application so that it has one zone that requires Windows authentication that is for administrators, and a second zone that uses forms-based authentication (FBA).
Note
If you plan to extend the Web application to other SharePoint 2010 zone(s), you should do so prior to deploying the SharePoint Commerce Services. Otherwise, you will have to reactivate the features after extending the Web application.