You can also specify which font to use on the invocation of a window:
xrsh cs xterm -font courb14
Or you can permanently change your default fonts by putting an entry in your .Xdefaults file
*font: *-courier-bold-r-normal-*-*-140-*
*Font: *-courier-bold-r-normal-*-*-140-*
and making sure the
xrdb line
is uncommented in your
.xinitrc
file.
Fonts under netscape are controlled via [Edit] => Preferences. Under Appearance, select Fonts. There you can choose what font to and size use for both variable and fixed width fonts.