Quote for fucking truth. Spybot especially is awesome.
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Also if you use Firefox get these addons, No script, wot, and Ad block. These programs keep alot of viruses from popping up in the first place.
Third to use Avast, and the only thing I’ve had it flag is game cracks. Dispite the flack Windows gets, the firewall is pretty competent, if annoying when playing games.
Spybot is one of the most well built, consistently updated and most useful free programs for spyware . Definitely reccomended.