Hi User294,
there are two so-called branches: We have the development branch - called trunk - and the stable branch - currently based on aMule 2.2.
aMule 2.2.3 is based on the latter and due to changes in the development branch, there are different strings in both.
The Russian translation for 2.2.3 has 6 strings missing and 10 strings you should check (fuzzy). Just click on the language name
at this page and you'll get the file for 2.2.3.
For trunk, there is unfortunately more work (25+57, see
http://amule.uw.hu/translations/trunk/).
To upload the altered po file, you attach it in the forum, either in the
prerelease section for 2.2.3 or the
translation section for the development version.
I hope this made this a bit clearer. If you have any more questions, please don't hesitate to ask, I'll help you as good as I can.
kind regards