Vista - sysprep HELP!!!

Hello,

I'm trying to use sysprep on a Windows Vista computer so I can make an image
but I have a Business edition upgrade volume license copy of the media, which
is not bootable. I put Windows XP on the computer then put a flash drive in
the computer with Autounattend.xml on it and then install Windows Vista. The
install goes fine but at a certain point it can't find Autounattend.xml.

So, then I build the master computer the way I want it then try and run
sysprep but get a fatal error. I found the Micrsoft knowledgebase article
and obtained the hotfix but I still get the fatal error. What can I do to
solve this problem with sysprep?

Thanks,
Rich