FadingAway, there are several sites where you input your text in transliterated Russian, and get output in Cyrillic letters. One of them is
http://www.ostrovok.de/filimon (or do a search for Filimon 2.2.5), but there are others, I'm sure. Don't forget to take a look at the transliteration scheme first.
Vasilisa Glebova