1. Download and install the latest version of GeDoSaTo at: http://blog.metaclassofnil.com/
2. Place the DarkSoulsII folder in the 'textures' folder located in the same directory as GeDoSaToTool.exe
3. Open GeDoSaTo.ini and locate the following line:
enableTextureOverride false
and change 'false' to 'true'