Well, I was the first to offer to translate to Basque, but unfortunately I'm not fluent in that language. So, I asked the help of some friends, one of them actually teacher of euskera, but they choked a little when they saw the astronomical and technical jargon, and I'm not going to submit a partial (and possibly incorrect) translation.
I hope you are luckier than me.
Toti is correct in that the only easily translatable version is the Linux one. But if you are in the mood, just grab the
file, edit the file (with a text editor), and place the translation between the double quotes at the msgtr "" beneath the original english message.
Or, if you prefer, translate the Windows version (but you will only be able to distribute it as binary, not easily updatable).
Agur eta zorte on!