Matt Churchhill (http://mattchurchill.net/2010/06/windowsripper/) has been doing some work to supercharge RegRipper.  Take a look at his video and while watching, consider how this can affect your method to triage a computer when booted to WinFE...

[youtube=http://www.youtube.com/watch?v=r4nBUXYGkBw&hl=en_US&fs=1&border=1]