Windows 7 - Preserving OEM Activation In Sysprep?

Hi guys,

I just got a job as an IT assistant and one of my first projects was to make a deployment image of both Windows XP and Windows 7.

I did a bit of reading into the "Sysprep" tool, and actually did make a successful image, the problem is that it asks for a serial number each time.

Our computers are Dell workstations that come with Windows 7 on them already, pre-activated, so this doesn't really work.

What I did for our XP workstations was this:
Preserving OEM Pre-Activation when Re-installing Windows XP
That worked like a charm. I have it set up to automatically connect to the domain, and everything, all the user has to fill in is their name and the name of the PC.

Is there something similar for Windows 7? I'm assuming Microsoft is not going to just hand out serial numbers like that until 7 is EOL like XP is, but is there some other way to do it? Provided I have the pre-activated one installed, can I have it not deactivate or prompt for a serial number upon running Sysprep?

Will this help?

Download: Preserving Activation - Microsoft Download Center - Download Details