Windows XP

• 1). Turn on your computer and log in. Right click an empty area of the taskbar and select "Properties."
  
  
• 2). Click the "Start Menu" tab at the top of the window. Click the "Customize" button next to the "Start menu" item.
  
  
• 3). Click the "Advanced" tab at the top of the window. In the "Start menu items:" pane, scroll down until the "Run command" entry is visible. Click to uncheck it.
  
  
• 4). Click "OK," then "OK" again. Click the "Start" button and verify that the "Run" command has been removed.
  
  

Windows Vista and 7

• 1). Turn on your computer and log in. Right click an empty area of the taskbar and select "Properties."
  
  
• 2). Click the "Start Menu" tab at the top of the window. Click the "Customize" button at the top.
  
  
• 3). Click inside the "Start Menu items" pane. Scroll down until the "Run command" entry is visible. Uncheck if it's enabled.
  
  
• 4). Click "OK," then "OK" again. Click the "Start" button and verify that the "Run" command has been removed.