I thought I would mention that MultiBit is also localised into Russian.
There is a dropdown on the View / Preferences screen where you can set the language options.
There is a thread in the Technical and Development / Alternative clients that I am using to coordinate the progress of it.
Edit : this thread - https://bitcointalk.org/index.php?topic=43616.0
Edit : screenshot in Russian - http://multibit.org/postImages/2011-0914-languageCodeInCombo.png
(ps I am not a Russian speaker - one of the team has access to a native Russian speaker who very kindly localised it)