Yes, I revised the old "chroot method" this days and made it more comfortable. It works for Knoppix CD and DVD.

The method with kn-remaster I recomend only, if you want to create a special Rescue CD.

If you like to work with Knoppix DVD, make a flash disk installation (poor man installation) or a "poor man harddrive installation", each of these with persistent memory.
Hard drive Installation

If after some time there is a lot of unneccesary stuff in your persistent memory, you can consider to use the method kn-recombine.