Commerce Server 2009 MSDN Forum is now available
The MSDN support and news forum for partners and customers is now live and you can start posting your Commerce Server 2009 related questions, suggestions and feedback on the forum.
https://social.msdn.microsoft.com/Forums/en-US/commserver2009/threads/
To visit the forums for Commerce Server 2007 and earlier versions you can use the link below.
https://social.msdn.microsoft.com/Forums/en-US/category/commserver/