You can boot straight from the ISO using the bootfrom cheatcode (i.e. bootfrom=knoppix.iso) so that means you never have to copy or install anything... Just download the new ISO and boot up

There is ALOT of info about this method in the thread I've posted below along with some files youll probably need.
http://www.knoppix.net/forum/viewtopic.php?t=11796


Take Care,
-Justin
One Mynds Eye