To reposition the desktop on your television or CRT
From the NVIDIA Control Panel navigation tree pane, under Display, click Adjust desktop size and position to open the associated page.
Click the image that represents your TV.
Use one of these steps depending on whether you want to move you desktop right, left, up, or down on your television screen.
Windows Vista and later: If applicable, click the Position tab.
To move the desktop up on your television screen, continue to click the up arrow 
that appears on the image labeled Position: until you achieve the desired result.
To move the desktop down on your television screen, continue to click the down arrow 
that appears on the image labeled Position: until you achieve the desired result.
To move the desktop to the right on your television screen, continue to click the right arrow 
that appears on the image labeled Position: until you achieve the desired result.
To move the desktop to the left on your television screen, continue to click the left arrow 
that appears on the image labeled Position: until you achieve the desired result.