Why do you want to translate the old Polish and Russian posts?
During the last year most of the posts were done in English and they include all the stuff you have to know about this game.
(In addition some older posts have become wrong because of the changes inside the game).
I would suggest following method to you (and all the others inside the forum):
1. Search your topic inside the forum (some words or phrases). When you find it well explained (or not), give the post your vote.
2. Ask your question with some annotations in 2 or 3 sentences and wait for answers. Here you can use your voting too.
Imagine the Russians starting to translate all English and Polish posts. You won't be happy about this;-)