[gudis]

OK, not exactly a utility per-se, but I've heard good things about N-Lite.
Basically compiles an ISO of windows with any registry settings, programs, service-packs etc. al. directly off of the burned disc. I have to admit I havn't tried it, but it sounds like a great way to keep from having to d/l all of your software and get everything configured off the bat. Just think of it, windows WITHOUT that dumbass search dog, straight off the disc...