Microsoft Word 2010

• 1). Launch Microsoft Word 2010. The program begins with a new blank document automatically. To change the text in an existing document, click the "File" tab, click "Open" and double-click the document that you want to modify.
  
  
• 2). Click and drag with the mouse pointer to highlight the text that you want to change to the 12-point size.
  
  
• 3). Click the "Home" tab at the top of the window.
  
  
• 4). Click the drop-down menu next to the font name and then click "12" to change the selected text to 12-point size.
  
  

Windows Live Mail 2011

• 1). Launch Windows Live Mail 2011. Click the blue button in the upper-left corner of the window and then click "New" to begin composing a new message.
  
  
• 2). Type the message as normal and then click and drag with the mouse pointer to highlight the text that you want to change to a 12-point font.
  
  
• 3). Click the "Message" tab at the top of the window.
  
  
• 4). Click the drop-down menu next to the font name and select "12." The highlighted text will change to the 12-point size.
  
  

Microsoft Outlook 2010

• 1). Launch Microsoft Outlook 2010. Click the "Home" tab at the top of the window and then click "New E-Mail" to begin composing a new message.
  
  
• 2). Type the content of your message and then use the mouse to highlight the text you want to change.
  
  
• 3). Click the "Message" tab at the top of the window.
  
  
• 4). Click the drop-down menu next to the font name and select "12" to change the size of the text.