Could it be Leslie that you do not have an appropriate charset installed? Also, I understand that only these fonts use it: (from key-shortcut.com)
Times New Roman
Comic Sans MS
Symbol (no web safe font)
Webdings (no web safe font)
Arial Unicode MS (no web safe font)
Of course, I could be wrong.... but, if you know a couple of Armenian speakers who would be willing to try to translate Moodle strings into Armenian, then I know that Koern would only be too glad of the help. That 37% could become 100% in a few days.. or so.