Building Automated Custom Install CD

[Jim Sims]

I am looking for information/pointers/HowTo about creating an automated custom install CD. The CD would have a sysinstall script and custom packages so that upon bootup it does a complete install without asking. (I know... Dangerous TM)

For the interested this CD will be used to install FreeBSD and apps on a standalone headless audio recording system I have designed. Since it is standalone (not necessarily networked) and headless The whole install process must complete without user input.
(http://www.esims.org/dal.html)

As I understand FreeBSD, I could use the release process or I could modify a picoBSD floppy image, but I would like to "Keep It Simple Stupid".

I have done the requisite Googling, Handbook, etc and come up with few answers so any help is greatly appreciated. Once I understand/test/prove the process I will be happy to submit it for Official FreeBSD documentation.

Jim Sims