enUS

so my friend was playing on russian server before and downloaded wow from there too and whole thing is in russian language and he can't change it in options or anything now he's on warmane and wants to change english language and if anyone could help out to how to change it without downloading wow again i'd be thankful

Wehn you downlaod a torrent, you can pick what files to download. If he just downloads the enUS file from warmane, and replaces the ruRU file, it should work.