I already followed the instructions from http://wiki.debian.org/DebianInstaller/Modify?highlight=%28debianinstaller%29 and was able to make a custom debian installer. I even modified the priority for some deb packages and it worked.
The only problem is that I cannot find an overrides-like file for udebs. In case I find this file, which correspondence exists between the priorities defined in it (extra, optional, required, standard) and the ones defined for debconf priority (critical, high, medium, low.) I tried changing the priority by hand for dhcp-client-udeb in <path-to-CD-tree>/dists/sarge/main/debian-installer/binary-i386/Packages but I couldn't make the hostname and search domain prompt wait for user confirmation using debconf/priority=critical on isolinux.cfg. Am I on the wrong path?
