Vista - Sysprep - Creating a Build-to-Order (BTO) Windows Image

First let me say I have read the sysprep documentation but there is still
vagueness that I hope to clarify.

We purchased 40 identical machines from Dell preinstalled with OEM Vista
Business. My goal is to configure one of these machines with minimal
information that ALL users in every department will use (i.e. Office 2007,
Faxing Software, Imaging Retrieval, etc.).

I would like to create an image of this so that I have an image for an admin
person. Then I would like to install software that is necessary for our
Accounting department and them image the machine as an Accounting master
image. Then go back to the base image and configure the machine for our
Safety department and image and so on and so on.

WHAT I HAVE DONE SO FAR
1. Configured one of the machines with all the standard software that
everyone will use.
2. Ran sysprep GUI and left the default option for "System Cleanup Action"
which was "Enter System Out-of-Box Experience (OOBE). I checked the
Generalize checkbox and then changed the Shutdown Option to Shut Down.
3. Used WinPE/ImageX to boot the machine and make a WIM. So now I have a
standard WIM.

Here is where I'm not sure of the BEST way to continue. After doing some
reading/research I see that basically what I am trying to do is to create a
Build-to-Order Windows Image. So I'm guessing I should have chosen "Enter
System Audit Mode" instead of the OOBE option before making the image. Then
install the image on a new machine, install the other applications in Audit
mode and then do a sysprep choosing OOBE and NOT generalize.

If that is correct, since I didn't do this what are my options. I see from
the documentation that once I boot up I can select CTRL+SHIFT+F3 at the
Windows Welcome screen to enter Audit mode but it's not clear if this is what
I should do..

In other places in the sysprep documentation it says NOT to run sysprep on
an already deployed machine so I'm confused on my options at this point.

So to summarize, since I already did the OOBE/Generalize using sysprep but
now would like to add more programs to the image and then re-image what are
the proper steps??

Thank you.

Looks like my original post did in fact go through. Sorry for this duplicate
post.