Customizing Leopard netinstall images?

Anybody else creating customized netinstall netboot images for Leopard yet? With 10.4.x I was able to modify the rc.cdrom scripts to launch an applescript studio application instead of apple's installer.app. This allows us to have a nice GUI fronted to restore any of our 40+ os images. Leopard has changed the boot up game quite a bit. I currently have an netinstall image that boots and launches our application but fails to connect to AFP shares. When using mount_afp from the command line I get a "network security failure" error. I'm using Leopard server 10.5.0 on a MacPro with apples SUI tool to create these netinstall images from a second volume. Using this SUI tool on leopard has also been problematic. However the netinstall image I'm starting with is "known good" or at least works as apple intended. I have been adding back some of the LaunchDaemons from a standard install of leopard but this has not resulted in success. I could really use some suggestions on how to figure out the dependancies for connecting to an afp share when booted from a netinstall image. Suggestions? TIA, Blake-