http://blogs.technet.com/b/office_resource_kit/archive/2010/09/30/kms-1-2-recommended-for-setting-up-an-office-2010-kms-host-on-windows-server-2003.aspxTo set up an Office 2010 KMS host on Windows Server 2003, you must install Key Management Service (KMS). Although the minimum required version is KMS 1.1, we highly recommend that you install KMS 1.2, which recognizes virtual computers as part of theen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)