Well it's a little hard to explain - it's not the way I'd expect anyone to talk in real life, sounds more like translated word-by-word, you know?
The sentences are a little long and (at least some of) their parts would be arranged otherwise in natural language.
Anyway, every help is welcome, and don't find it polite to change someone else's work without urgent necessity! Otherwise I could have translated this by myself before...
I already did some pages in the wiki, but I must admit, POEDIT is much more convenient to me...