I don't know if this have been bought up before but in our LUG we were discussing a way to install KNOPPIX, in such as easy way that my mother could find out how to do it.

By looking at the miniroot.gz on the boot.img, we found linuxrc (placed in the root) was looking at all drives for a subdir called /KNOPPIX/

The normal behavior is that it is found on the cdrom, but it could also be on /dev/hda1.

You must have vfat or ext2 on your harddrive:
1. Boot up in Microsoft Windows
2. Open "My Computer"
3. Open cdrom "KNOPPIX"
4. Click right mouse button on subdir KNOPPIX and choose "copy"
5. Click back to "My Computer"
6. Click right mouse button on C: and choose "insert"
7. Make a boot floppy disk and keep the floppy in drive
8. Eject cdrom and reboot

I have a page here about it with pictures (in danish, sorry):
http://tyge.sslug.dk/knoppix/hdsimpel/