I need help my monitor is a lcd my resolution is 1280x1024
LCD monitors typically just have 60Hz refresh rate, the actual rate that the image is refreshed while illumination from the backlight is constant. Because of the constant illumination, flicker is hardly noticeable. The conventional cathode lamp backlight actually flickers somewhat but at ~200Hz (beyond what can be perceived by human eye). It is the CRT monitors that usually have a wider range of refresh rate. At 1280x1024, a CRT monitor could have ~90Hz refresh rate.
