I work at a school where we are rolling out a new, custom image of Tiger for our Mac clients, but I've found that creating an image of Tiger 10.4.1 isn't as easy as it was for Panther. One, Mike Bombich's Carbon Copy Cloner doesn't work quite right for Tiger yet, removing an easy approach, and two, Apple's Disk Utility creates images that make visible crucial system files like "etc" and "var", which absolutely can't be visible in the final image or else my users will certainly mess with them and kill the client system.
So, after a few days' work, I've come up with a procedure for creating the image that I thought I'd share. If you're working on other stuff, allow a day or two to complete this process -- it takes a while, but is worth it in the end when you can NetInstall multiple clients (or even better yet, use Multicast ASR to image many clients simultaneously - ooooh, geeky).
The process:
$ cd /Volumes/Mac OS X Install DVD/System/\
Installation/Packages/OSInstall.mpkg/Contents/Resources
$ sudo ./SetHidden /Volumes/mounted_image_name hidden_MacOS9
The above is taken directly from this KnowledgeBase article.Mac OS X Hints
http://hints.macworld.com/article.php?story=20050623094230186