As a part of my wife’s work on wp-based site, I have translated Contact Form WordPress plugin to russian.
WP-ContactForm is a simple drop in way for users to get in touch with you. Its easy for any WordPress user to add this functionality to their site. Just upload two files and change a few options in your admin panel and you’re set.
Russian .po and compiled .mo files can be found here. Installation procedure is really simple: upload .mo file to /wp-content/plugins/wp-contactform/ directory on your server.