we have finally reached the public beta state for our translation tool:
in order to contribute, you need to apply as 'translator' (http://www.rigsofrods.com/profile.php?do=editusergroups)
the software is still WIP, so please report any problems or bugs!
UPDATE: please only apply as translator if you speak any of the non-English languages fluently. (we had incidents in the past with stupid people translating words via google translate ... )