Enabling 100 dpi fonts in 8.1 runlevel 5

Greetings! How do I go about enabling 100 dpi fonts when using runlevel 5? I have edited the Xservers file and added -dpi 100 to the command line there, but to no avail. It still runs at 75 x 75 dpi. If I start at runlevel 3 and run startx -- -dpi 100 it will start up at 100 x 100 dpi. I am using KDM and KDE. I'm stumped. (Ok, maybe not so hard to do... but I've searched both Suse and Google without finding an answer) Thanks in advance! Doug