My laptop is not showing ';DISPLAY ';,then how to change screen resolution?

if u r using windows XP:

go 2 control panel, in category view open Appearance and Themes %26gt; Change the screen resolution.

if u r using windows vista:

go 2 control panel, in control panel home view open Appearance and Personalization %26gt; Personalization %26gt; display settings. There u cn adjust ur screen resolution.