Resolutions in ZSNES are categorized into S/W, S/F, R/W, R/F, DS/W, DS/F, DR/W and DR/F. S (stretch) modes stretch the SNES image to fit the display area D modes allow filters such as HQxx and 2XSai, for example R (ratio) modes are the opposite of S and keep the original SNES aspect ration of 8:7 F (fullscreen) modes are fullscreen modes, naturally. W (window) modes are windowed modes, naturally. If you want to configure the controls for player one, go to Config --> Input. Tab #1 (#2 is for player 2, etc.) is selected by default and there are only two options: None or Keyboard/Gamepad. Select Keyboard/Gamepad and press Set, so that Current: reads "Keyboard/gamepad". Press Set Keys and follow the onscreen prompts. Figuring it out isn't really that difficult, you know.