Windows 7

• 1). Click on the "Start" button and select "Control Panel," "Appearance and Personalization" and "Personalization."
  
  
• 2). Click on "Display Settings."
  
  
• 3). Select "Portrait (flipped)" from the "Orientation" drop-down menu to rotate the desktop.
  
  
• 4). Click "Apply," then "OK."
  
  

Mac OS X

• 1). Click on the Apple icon in the upper left-hand corner of the desktop screen. Select "System Preferences..."
  
  
• 2). Click on the "Displays" icon.
  
  
• 3). Select a rotation from the "Rotate" drop down menu. Close the "Displays" window.