The GLI is currently only available in the five languages you mention:
English, French, Latvian, Russian and Spanish. It is certainly possible
to translate it into other languages but it is a fair amount of work
because there are quite a lot of strings. So far, only Latvian has been
done by a volunteer; the others have been done by UNESCO.
See http://www.greenstone.org/cgi-bin/library?a=p&p=intn for more
information about Greenstone internationalization.
>I have Greenstone 2.62 and the current language packs on Windows XP.
>Is it possible to use the Librarian Interface in any language, e.g. Arabic?
>Viewing a collection in another language works well, but the Librarian
>Interface restricts me to English, French, Latvian, Russian and Spanish. I
>know this is a quite simple question but I did not find an answer, neither
>in the language pack information on grenstone.org, nor in the mailing list
>greenstone-users mailing list