No, the echo command is to just show the result of the Cyrillic conversion in ANSI encode.
Silly me

Sorry for the dumb question...
Tomao, your idea worked almost fine

I will do my best to try and explain you why, since this forum also lacks some UTF-8 support, so I guess I won't be able to write down everything I need the way I'd like to.
I believe that the main problem is the fact that my default system encoding is CP1251. So when I perform you //echo command, my responce is different. Here's how it looks like:
link1. Then I separated letter codes with vertical bars {|} and replaced the responding part of your on$*TEXT* code. I ended up with this code:
link2. I saved it in a new script and loaded the script in my bot mIRC. At first, I had some trouble (it recognized some letters, while refusing to recognize or recognized wrong the others). But after some time, I got it working. Unfortunately, it could recognize only when I type just one letter. If I typed in more than one letter or more than one word, the script recognized only the first one.