download Microsoft Security Essentials, the free malware defense software used in class
1. Open Internet Explorer.
2. Navigate to http://www.microsoft.com/securityessentials.
3. Click the Download now button in the center of the screen.
4. When you are asked Do you want to run or save this file?, click Run each time you are asked.
5. The installation will begin. Complete the installation by following the directions as you are prompted.