Rebuilding minimal install iso RHEL 4 (U1)

[Michael Stiller <ms 2scale net>]

I want to do unattended RHEL 4 U1 (ES) installations via 
kickstart. Unfortunately this is not possible, cause
the installer wants me to change cd-roms twice. 
This is not acceptable for an unattended install. The installation
itself is a minimal install with some more unneeded packages removed
(mgetty, some serial stuff e.g.) 
(actually about 220 packages are installed)
A DVD image is not an option because not all machines
are DVD-Rom equipped.

Any clues on howto-rebuild the installation cd images 
for a really "minimal" install which doesn't need that
braindead cd changes. I tried to follow 

http://www.techonthenet.com/linux/centos4_update.php

but with no success so far. 

I'm not really amused about this. The minimal install
is also bloated as hell. And this crap is called 
*enterprise* linux after all. 

Any clues on the rebuild image issue?

-Michael