Export Product data via Biztalk Adapater for Commerce Server 2007

I need to export Product data from Catalog system via the Biztalk Adapater for Commerce Server 2007.

MSDN says – "If you change the default schemas for the Orders, Catalog, Inventory, or Profiles Systems within Commerce Server, and you are going to use one or more of the BizTalk adapters provided with Commerce Server, you will need to generate an up-to-date version of the XSD file that describes the now changed schema(s) and deploy the schema(s) to the BizTalk application in which your adapters reside. By doing this, the BizTalk processing that you develop for the adapter messages will be able to properly validate and interpret the data in the body of the messages."

It explains the Orders and Profiles, but for Catalog and Inventory, it says – "The Catalog and Inventory adapters provide an alternative mechanism for generating the Catalog System and Inventory System schemas, respectively. When you configure the transport property Format Type to Xsd for a Catalog or Inventory receive adapter endpoint, the body of the export message contains the schema of the corresponding Commerce Server system."

I dont understand. So what this means is I really dont have to do anything – simply apply the map on the Send Port of the Commerce Server Catalog Adapter? What about namespaces, or schema type names? DO I have to use the default names for messagetypes?

 a) Which raises another questions. The MessageType name for the Catalog Schema is "Microsoft.CommerceServer.Adapter.MessageSchemas.Catalog1.DefaultCatalog" – but the DefaultCatalog is a system schema and not an adapter schema. Why is everthing prefaced with Adapter – as in "Microsoft.CommerceServer.Adapter.xxx" ?