Well, the simplest way to deal with fonts in Mozilla is to create a .fonts directory in your Home Directory and load it with the MS core webfonts (a Google search for "MS core fonts will find them} and a couple of your favourite from your Windows install if you have one. If you are using persistant home the fonts will be there every time you start Knoppix. Or, you can save configuration to hard disk (the fonts will make the .tbz file too big for a floppy) or, lastly, you can save a copy of the .fonts directory to a partition and copy it over to Home each time you start up which just takes a few seconds. KDE does not have to be restarted for Mozilla to access the fonts.