Installation notes:
1) Create (if not yet) MODS folder in GAMEDATA\PCBANKS;
2) Delete or rename file DISABLEMODS.TXT in GAMEDATA;
3) Unzip archive and copy .pak file(s) in GAMEDATA\PCBANKS\MODS.

It's advisible, but not mandatory, to delete all files in GAMEDATA\SHADERCACHE (game will recreate them on next start).