I went to the installation DVD and couldn’t find sysprep. A quick google later and a bit of poking around revealed that sysprep is now installed by default on Windwos Server 2008. You can find it at: c:\Windows\System32\sysprep\sysprep.exe The experience is also streamlined considerably. Simply run sysprep.exe above and you are presented with:
Check the “Generalize” checkbox (regenerates system SID), change the Shutdown Options to “Shutdown”, and click OK. The system will go through the sysprep process and shut itself down.