Howto: rolling your own FC5 Kickstart installer DVD's?

[Philip Prindeville <philipp_subx redfish-solutions com>]

Is there a good document on how to explode the FC5 DVD .iso file, add or
subtract some files and RPM's, maybe add a ks.cfg file to it, and then 
put it all
back together again?

Seems that this would be a handy tool... I'd like to be able to do automated
installs of FC5...

Thanks,

-Philip