I think billy777 is refering to the editor itself where you type the program, not only the output.
@billy777
If you use the default editor that comes with DBC (I know - it's cumbersome and not ideal for development) there should be an ini file that comes with it that resides in the same directory as DB.exe
Under [SETTINGS] you should see several language setup options. If you don't have the appropriate help language files, the only thing you have to change is the TextLanguage-Charset and set it equal to 204:
[SETTINGS]
TextLanguage=English
TextLanguage-Charset=204
HelpLanguage=English
HelpLanguage-Charset=1
HelpFontSize=0
In DarkEdit, I remember reading somewhere on the forums that there are some problems with the font setup and it doesn't lend itself to behave properly 100% of the time except with the default.
You may be able to change your windows language characterset or keyboard when typing in DarkEdit and that may do the trick.
Under Control Panel, look for keyboard. Add a language (Russian) and apply the settings you want for special characters (LeftAlt Shift key etc.). Don't forget to switch your keyboard back to whatever you normally have it set to when you no longer need Russian.
Enjoy your day.