I would like to announce that we are starting the greek translation of moodle (including help and doc) which we would like to contribute back to the moodle community.
George Fousekis has also started on Greek recently (but not posted here) - I'll ask him to contact you - perhaps you can share some of the remaining work.
Let me know if I can help (with Moodle, I've forgotten the Greek I learned as a child!)