Instructions
Insert "Call of Duty 4: Modern Warfare" into the Xbox 360 disc drive.
Highlight the "Controls" menu option, then press "A" on the game controller.
Cycle through the preset button layouts at the top of the screen until you find that you want to use. The button layout will be displayed on an image of a Xbox 360 controller on the center of the screen.
Raise or lower the look sensitivity to a level you are comfortable with. A higher number makes the stick more sensitive to movement while a lower number makes the stick less sensitive.
Turn "Look Inversion" on to flip the camera controls. With "Look Inversion" on pressing up on the right joystick will cause the camera to tit down, while pulling back on the joystick will cause the camera to tilt upward.
Press "B" on the game controller to exit and save the changes made.