To use NewWolf, download it from the website. Extract the files from the .zip file, then place all files in your Wolfenstein 3D/Spear of Destiny directory (where your original executable file is). Run NewWolf instead of the original files. The default keyboard layout uses ESDF, rather than WASD or arrow keys, for movement. DarkOne, and some other devoted gamers, insist that this layout is better, but the player can enable whatever layout he wants in the Controls menu.