Screen resolution represents the number of pixels that are displayed on a computer screen.
It is normally represented in a measurement of the number of pixels wide by the number of pixels high. Many web sites, including this one, have been designed to be best viewed at a screen resolution of 800 pixels wide by 600 pixels high. Most computers support 800 X 600, but are not set for this by default. This will open up the control panel where you can change various settings for your computer. Now, to change the screen resolution, click on the settings tab.