To change the display order in a multi-display configuration
Windows XP
Make sure you have securely connected the additional displays you want to use to your computer.
Verify that your displays are plugged in and turned on.
From the NVIDIA Control Panel navigation tree pane, under Display, click Set up multiple displays to open the page.
In step 2, click the display pair list and select the pair of displays in the order that you want to use them. For example, for display pair A + B, you can choose the "A + B" option or the "B + A" option.
Note: If any one of your displays isn't showing an image, make sure to repeat steps 1. and 2. If that doesn't work, restart your computer and repeat the above steps.
Windows Vista and later
Make sure you have securely connected the additional displays you want to use to your computer.
Verify that your displays are plugged in and turned on.
From the NVIDIA Control Panel navigation tree pane, under Display, click Set up multiple displays to open the page.
Click and drag the display icons to match the physical position of your displays.
To identify which display is represented by an icon, right-click the icon and then click Identify to see which display shows the same number as the icon. You can also move the mouse cursor over an icon to see more information about the display, such as manufacturer, model, connection, and resolution.
Note: If any one of your displays isn't showing an image, make sure to repeat steps 1. and 2. If that doesn't work, restart your computer and repeat the above steps.