Microsoft has released Key Management Service 1.1 (x86) for Windows Server 2003 SP1 and Later
>> KMS 1.1 for Windows Server 2003 SP1 and Later
Key Management Service 1.1 for Windows Server 2003 SP1 and later enables enterprise customers to activate volume editions of Windows Vista and Windows Server 2008.
>> KMS 1.1 for Windows Server 2003 SP1 and Later