A lab colleague mentioned this program to me last week thanks for the excellent program.
If its helpful to anyone I have wrote a guide on using it and incorporated it into to my Windows Installation Guides. Usually I recommend installation of the Service Packs and major OS updates such as IE before installation of the system drivers as it leads to the best performance. However updating offline with WSUS then installing the drivers should lead to even better performance.
My guides are getting to be quite popular so it should also get some more people using this program:
http://dellwindowsreinstallationguide.com/wsus-offline-update/