It really couldn't be simpler. Right click, menu item 10, "Change read/write mode".

How the heck did I miss *that*

Mind, 'twas a dicky computer I was on. Wonder if Knoppix saw the dickiness & decided it wouldn't bother putting the option up, since it knew it wouldn't be able to do it anyway well.. it's a theory anyway. To camouflage my eye problems.

I need to eat more carrots thanks for the help JD.