just put the 4 font files:
nosnb.ttf
nosnr.ttf
nosns.ttf
nscnr.ttf

into:
usr/share/fonts/nokia

reboot phone and reapply any widgets back to the homescreen if they are missing


the 4 font files apply to different parts of the phone,
you could have 4 different fonts running at once,
on different parts of the phone if you wanted

here ive just included 4 copies of the same font 'alba'
and renamed them to the above names

to apply a different font you must reapply the nokia original font first, (there included here) and reboot phone,
then apply your font files and reboot