Sysprep In Windows Server 2008 is a very simple task compare to Windows Server 2003.
The Sysprep utility is now loaded by default to the O/S so there is no need to download files or use the installation DVD.
The sysprep a Windows Server 2008 go to:
C:\Windows\System32\sysprep
Click on the sysprep.exe file
Select OOBE option and check the Generalize check box.
All done.