[expert] Howto integrate new settings in homebrew ISO?

[root]

Dear Mail list!

After a lot of download and adjusting work I finished a homebrew
Mandrake-iso, which I burned on CD.  But it only contains the default
configuration files...
Is there a possibility to include my adjusted configuration files (i.e.
isdn-files, crontab...) in the installation files on the CD?
Ok, I could backup /etc on a disk and then overwrite the install
settings, but hopefully there is another, more elegant way...
Any sort of help appreciated!

David.
(Mail: [EMAIL PROTECTED])