This mod gives you a choice, do you want high resolution Russian Standard, Nemiroff, or Smirnoff. Remember that you can only use one at a time.
To install, extract one of the folowing files, not all three of them, Extract the files in your S.T.A.L.K.E.R. directory which for retail buyers should be located in C:/Program files/THQ/S.T.A.L.K.E.R. -Shadow of Chernobyl/Gamedata/ and for Steam users it should be located in C:Program files/Steam/SteamApps/Common/Stalker shadow of Chernobyl/gamedata. If it inquires you to replace files or folders, be sure to make copies of the original before overwriting the old ones.