A. An update is available for Server 2008 and Vista machines that allows these OSs to act as KMSs for Windows 7 and Server 2008 R2. An update for Windows 2003 is also available.

Once you apply the update, your system will reboot. The new Windows 7 or Server 2008 R2 key is supplied using the command

slmgr.vbs /ipk 
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