Ghost Imaging and KMS activation

Hello and thanks in advance to any answers.

I'm working on deploying Vista Enterprise on our campus using Ghost imaging
and KMS activation.

My question is, what do i need to do before I make an image of Vista. I want
it to be able to just pull the image down on a computer and have it go ahead
and activate. I know you can do this through Slmgr.vbs. I've been having
problems pulling the image down and having it activate through slmgr.vbs
-ato, i keep getting errors. Is there something i'm doing wrong?

Brian