56 Using the Display10 If prompted, click Yes to keep the settings.11 Click OK to close the Display Properties window.To disable dual independent display mode:1 Click the Settings tab in the Display Properties window.2 Click the monitor 2 icon, uncheck the Extend my Windows desktop ontothis monitor option, and then click Apply.If necessary, press to bring the screen image back to thecomputer display.Windows Vista™1 Click the Windows Vista Start button , and click Control Panel.2 Under Appearance and Personalization, click Adjust screen resolution.3 In the Display Settings window, click the monitor 2 icon, click the Extendthe desktop onto this monitor check box, and then click Apply.4 Click OK to close the Display Settings window.To disable extended desktop mode:1 In the Display Settings window, click the Settings tab.2 Click the monitor 2 icon, uncheck the Extend the desktop onto thismonitor option, and then click Apply.Using a Monitor as Your Primary DisplayTo swap your primary and secondary display designations (for example, to useyour external monitor as your primary display after docking), perform thesteps in the following section that corresponds to the operating system yourcomputer is using.Microsoft® Windows® XP1 Click the Start button and click Control Panel.2 Under Pick a category, click Appearance and Themes.3 Under Pick a task..., click the area you want to change, or under or pick aControl Panel icon, click Display.4 Click the Settings tab→ Advanced→ Displays tab.