Building Branded Exodus

Hello everyone.

I'm attempting (and failing) to build a "branded" version of Exodus for
a corporate rollout on August 31 or thereabouts.  Here is the problem:
The documentation on the Exodus site is terribly out of date, and the
NSIS scripts provided seem to also be out of date.

At this point I've concluded that I'm either using the wrong version of
NSIS (2.19) and/or the script is above me.  Understanding that much of
this process is relying on The Source, I'm hoping someone can provide a
clue/document/process/cookie that could point me in the right direction
on this project.

Not a big deal if this is too tall an order, but it would be rather nice
to have automatic application updates and push the branding.xml file out
to clients if we ever want to update or change something.

A year ago I was able to put together a branded client.  But that
project was put indefinately on hold and I never got around to
documenting what I had done on it (which has changed apparently anyway
based on my experience with this).

Thank you for your time,

-Brock