You should be able to change fonts to suit whatever you're working
on at the time -
[go to options to set accordingly first]
then with the most appropriate font, you can add to it by
clicking on 'character map' which will pop up a box containing various
additions -
for example, if you wish to add the letters which contain
various above or below characters, as found in the Romance languages.
[start -> character map -> scroll through box]
BTW - you're English is fine; but please don't use NAZI again