[paolos85]

That file is not in Files or MODS folder, look at the i18n folder directly in the root folder of the game. Copy both hud_msg.properties and netmessages.properties to Files/i18n and add the _ru to both names, and you'll get english texts both offline and online.

Hey... it worked! Thanks!!! =)
I had misunderstood that little detail while following the instructions. My fault, eheh! ^_^