Real-time Shield helps to protect your computer from spyware and other unwanted software. When you activate Real-time Protection, many spyware programs can be intercepted and disabled before they are installed, helping to prevent potential security breaches before a spyware program can run.
When you install Spyware Terminator, the Setup Assistant allows you to setup Real-time Protection. This means that while you're browsing the Web or downloading and installing new applications, Spyware Terminator monitors your computer and warns you when you might be installing spyware or other unwanted software.