LadyPixel,

There is a version of Puppy Linux (Multi-session CD) that will save changes back to CD.

I have not tried it. This version is still an alpha release.

Puppy is a compact distro so it does not contain the same/as many apps as Knoppix. Nevertheless it is quite interesting, especially if you are used to Windows 9x as the desktop looks remarkably familiar!

ICPUG