I read all the man files on icewm and the KDE manual but when I try to log off, I'll end up quitting Knoppix too.

How can I get out of KDE without loosing my Knoppix session.

When I tried 'icewm' in the terminal, it said a window manager is already running and quits.

I have a slow Pentium Pro 200 SMP system and wanted to see if icewm will speed up the response.