We can always use new translators.
Dirk (
http://www.geeklog.net/users.php?mode=profile&uid=408) would be the best one to talk about this but the main thing he will need from you is just the updated language files.
For issues like you ran into below about the translation problem I would enter a bug report (
http://project.geeklog.net/).
Tom
One of the Geeklog Core Developers.