Vista Enterprise Deployment

Here is our background. We use PXE boot to boot up to windows PE, and from
windows PE we open up our ghost server and deploy our images from our server.
We are on a campus so we have a domain. When we brought down the XP images
we run a script for the person who owns the laptop/desktop to enter their
username and then it adds them to the correct OU.

We are Working on creating images for Vista Enterprise. We are using KMS
activation.
Few Questions.

We are trying to somehow make it easier to bypass the activation timer of
the images that we put on our servers. We don't want to have to pull them
down every 30 days and try to rearm the image. The simplest way we have
found was by running sysprep -generalize and shutting the computer down then
imaging it up right away. There are a few problems with this. We don't want
to have wait for sysprep to run every time your pull the image down. Is there
a way to make this faster? Is there a way to bypass having to sysprep before
putting the image up on our servers?

We have tried to to the skiprearm method of changing skiprearm to 1 and
running slmgr -rearm and then imaging it up on restart. This was to no avail.

If anyone knows of a faster easier way or has any suggestions. Please let me
know! Thank you in advance for all your help.

Brian