Not exactly, but it is a mistake to assume it is a 'solve all problems' kind of suite.
Securing Windows operating systems from Internet threats is not a single application, or even a suite.
It's layers of protection, user habits, threat landscape awareness, system configuration, real time protection, and more.
Although 'all-in-one' suites may be OK, (CareOne, McAfee, or Norton) plenty of freeware is available that will do the same job (maybe better???) & don't deplete your system resources (and therefore speed).
Generally speaking: as a system's convenience, interactiveness & flexibility increase: security decreases.
Look through some of the suggested freeware here, study up, and pick some of the frontline, real-time defenses. Create a restore point after each install, then run the system to verify that application's 'friendliness' with your system before adding other applications.
Sorry, but using Windows requires you to become a security expert, it's that simple. Something they don't tell you when you buy this system...
http://www.snapfiles.com/Freeware/security/fwsecuritytools.html
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Whatever 'layers' you decide on, add this to your counter-measure arsenal:
Sandboxie (http://www.sandboxie.com/)
runs your programs in an isolated space which prevents them from making permanent changes to other programs and data in your computer.
Use it for:
Secure Web Browsing: Running your Web browser under the protection of Sandboxie means that all malicious software downloaded by the browser is trapped in the sandbox and can be discarded trivially.
Enhanced Privacy: Browsing history, cookies, and cached temporary files collected while Web browsing stay in the sandbox and don't leak into Windows.
Secure E-mail: Viruses and other malicious software that might be hiding in your email can't break out of the sandbox and can't infect your real system.
Freeware.
Not overly difficult to use. Don't presume you can do just anything as it does have limits; listen to 'Security Now' #174 for more details (http://www.grc.com/securitynow.htm)
Freeware.
Not for 64 bit Vista platform.
Recommended by Steve Gibson (Security Now & GRC)