1. A system having a video display screen that provides video to a user, the position of the display screen being adjustable based upon the location of the user with respect to the display screen, the system comprising at least one image capturing device trainable on a viewing region of the display screen and coupled to a control unit having image recognition software that identifies the user in an image generated by the image capturing device, the software of the control unit also generating at least one measurement of the position of the user based upon the detection of the user in the image.