Best thing to do is reference deployment documentation *BEFORE* deploying or implementing KMS. Also be ware of VAMT tool, which can help assess environment. Volume Activation Deployment Guide Windows 7 http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=14903 Volume Activation Management Tool (VAMT) 2.0 http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=11936Dave Guenthner [MSFT] This posting is provided "AS IS" with no warranties, and confers no rights. http://blogs.technet.com/b/davguents_blog

MY company already use MAK . I want to use KMS . Which server using for KMS Host Company include win 7 Win server2008 &2008 R2 How Many client Activate in one host we need seperate host for win servers & win 7 ? Wich KMS key Use In Host regards.

Hi A KMS server can activate a minimum of 25 hosts (for server OS, the minimum is 5). You would use the appropriate key for the server OS, for example Windows Server 2008 R2 key if your KMS server is running Windows Server 2008 R2. You can obtain the appropriate KMS key by logging into VLSC. Regards Lionel MCP Windows Server MCTS .NET