If you use Windows 7 or Vista, please go to http://winrus.com/kbd_r.htm#phon
Another link: http://russoturisto.net/?p=225
I hope, you can read in Russian to understand, what have you do to download and to install the layout.
If you have MacOS or Linux, install the "Russian phonetic keyboard layout" (or something like that) - it must be in your system.