Procedures (Windows 7):

• Click "Start" -> "Control Panel"
  
• Open "Region and Language".
  
• Change to the "Keyboard and Languages" tab then click "Change Keyboards..." button.
  
• From the "Installed Services" group, highlight "Chinese (Traditional) - New Phonetic" then click "Properties..."
  
  
• Change to the "Keyboard" tab, then choose "HanYu Pinyin" and click "OK"
  
  
• Apply all "OK's"

Procedures (Windows XP):

• Click "Start" -> "Setting" -> "Control Panel"
  
• Open "Regional and Language Options " by double click.
  
• Change to the "Languages" tab then click "Details" button.
  
• From the "Installed Services" group, highlight "Microsoft New Phonetic IME / 微軟新注音輪入法 2002a" then click "Properties..."
  
  
• From the "Setting" tab, choose "Legacy IME" from the "Input Method Setup" group.
  
  
• Change to the "Keyboard Mapping" tab, then choose "HanYu Pinyin" and click "OK"
  
  
• Apply all "OK's".