Search:

There is a good site
http://translit.ru/
You don't need to download anything, use it online. I think it's very convenient.
There is even an on-line russian keyboard:
http://translit.ru/keyboard/...

Say, Martin, do you know that there is a Cyrillic keyboard you can use online? Google has one, and you can see how it works at
http://www.russianenglishdictionary.org/ it converts your keyboard...