The existence of spyware and other unwanted irritations on the Web is so widespread that keeping your PC protected is an absolute must. Microsoft responded to this need with the inclusion of its Windows Defender program with Windows 7. Windows Defender does exactly what its name suggests, which is to defend your PC from spyware and other malicious programs. It does this first with real-time protection that notifies you if any spyware tries to run on your computer or if a program tries to change any vital settings in Windows. Windows Defender also helps to keep your computer protected thro...