Making your mouse left handed

• Open the Start menu by clicking on the Start button or by pressing the Windows logo key (located between the Ctrl and Alt keys) - or Ctrl + Esc
• Click on Settings or press the letter S on the keyboard.
• Click on Control Panel or press the letter C on the keyboard.
• Double click on Mouse or press the M key repeatedly until Mouse is highlighted and then press Enter.
• The mouse properties page should be displayed (see fig. 1)
  

  
  Fig 1

• If you are not already looking at the Buttons tab, either click on it or press Control + Tab until it is at the front.
• Click the checkbox marked Switch primary and secondary buttons to set the mouse buttons up for left handed use.
• Click OK or press Enter to confirm your choice and exit the mouse properties.