Things You'll Need:

• Computer
• Internet Access
• Windows XP or higher
• Macintosh OS or higher
• Internet Explorer 5.5 or higher
• Symantec Antivirus software

Step 1:
Determine if your operating system meets the minimum requirements before you install Symantec Antivirus software. Requirements include having Windows XP or higher or Macintosh OS, a 55 megabyte hard drive, 128 megabytes of RAM and Internet Explorer 5.5 or higher.

Step 2:
Purchase Symantec Norton Antivirus software or download a copy from Symantec's website.

Step 3:
Remove any other antivirus software you may have on your computer before you install Symantec Antivirus, including any previous versions of Symantec or Norton Antivirus. Do this on a Windows-based machine by going to "Start," "Control Panel," "Add or Remove Programs."

Step 4:
Close any open programs before you install Symantec Antivirus software.

Step 5:
Insert the Norton Antivirus CD into your CD drive or open the downloaded file and double click on "Install Norton Antivirus." Follow the prompts that appear in the panels to install Symantec Antivirus.