
Check your XF86Config file to include a section like this

Section "Files"
   RgbPath    "/usr/X11R6/lib/X11/rgb"
   FontPath   "/usr/X11R6/lib/X11/fonts/misc:unscaled"
   FontPath   "/usr/X11R6/lib/X11/fonts/75dpi:unscaled"
   FontPath   "/usr/X11R6/lib/X11/fonts/100dpi:unscaled"
   FontPath   "/usr/X11R6/lib/X11/fonts/URW"
   FontPath   "/usr/X11R6/lib/X11/fonts/Type1"
   FontPath   "/usr/X11R6/lib/X11/fonts/Speedo"
   FontPath   "/usr/X11R6/lib/X11/fonts/misc"
   FontPath   "/usr/X11R6/lib/X11/fonts/75dpi"
   FontPath   "/usr/X11R6/lib/X11/fonts/100dpi"
EndSection

Just make sure that the fontpath lists the 75dpi (or 100dpi if
necessary) bitmap fonts before the URW fonts, and make sure you have
the string ":unscaled" appended to the bitmap font's fontpath. This
way, the bitmap fonts will be used if they match, and the Type 1
versions will be used if the font needs to be scaled (this may only
work with XFree86...). 

