Sysprep on Windows Server 2008 R2 Template

Hi,

I found the followed knowledge base about creating a vmware template for win srv 2008 r2.

http://www.it-book.co.uk/2122/creating-a-vmware-template-for-windows-2008r2

I set up my template with the sysprerp described in the blog.

Unfortunately I found two domain server with the exact SAME SID! Thereforde, there where several problems with the permissions...

Is windows making the sysprep before shutting down? So the article above would me wrong...

Thanks for ur answers.