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)
Arial
Arial Black
Impact
Lucida
Tahoma
Trebuchet MS
Verdana
Georgia
Palatino Linotype
Times New Roman
Courier New
Lucida Console
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.