Sysprep in Windows Server 2008 using Virtual Environment

Sysprep in windows servr 2008 is defferent than Windows Sever 2003.
Sysprep is installed by default when you install windows serer 2008. The default location is "c:\windows\system3\sysprep" if windows installtion is in C drive.

You need an unattendant.xml file to deploy sysprep in server 2008.
Instal WAIK(Windows Automation Installtion Kit).Then copy install.wim file from server 2008 source DVD to location in cdrive e.g: "c:\serer2008\sources" and create xml file.you can save the file as sysprep.xml in the default location mentioned above.

Open command prompt and change location to sysprep folder and run the command.

"sysprep.exe /generalize /oobe /shutdown /unattend:sysprep.xml"

after prearation the system shut down.now you can clone the VHD file ad create copies as you like.
If you are using Hyper V then only copy VHD is not sufficet you need to export the VHD and clone the whole folder and create copies.

Hope this will help you