Форуми / Cotonti / Support / Internationalization rewrite url problem

When I set up internationalization to include language selector in the url, it works only in pages and lists.

But Cotonti also makes urls like /en/admin and stuff, which don't work. How should I change htaccess to make the rest of urls work?

edit: it looks like only www.site.com/en/admin doesn't work, but once I get into www.site.com/admin/ , then the rest links like www.site.com/en/admin/config do work.

Added 3 minutes later:

How does it work anyway? should I get the category structure starting from language codes? How should I add internationalized pages?

Added 42 minutes later:

I would like to achieve this category structure:

en/news/somenews
de/news/somenews
pl/news/somenews

is it possible?

Added 4 minutes later:

An with a category strukture like this:
en/news/page
pl/aktualnosci/strona

is it possible? How the system knows which page to return?