Ok, in fact it's nearly impossible without massive text replacements like Word. With the good keywords of course. But it might be interesting.
It's a huge amount of work, and being a medical student it may take a while to achieve that ^^. But worth it, it's a really great mod that deserves to be known in France. Just that many french are anglophobic/germanophobic (foreignophobic in fact, or just francophil ^^).
If I can translate some block of text and that a superior could integrate them eventually, it would be awesome (don't know if that's difficult). The first thing I had in mind was rather voices, it makes a lot for immersion. I think it's possible that I find some french voices (corresponding to the english ones of course, not random ^^), but I don't know for exemple what extention is required, what could arrange modder...
But I think the project of an english translation is a good opportunity for other translations (but of course it's not a priority).
The best would be that I start when all factions will be in place and balanced.