Internet Wizards: Search Engines have Stopped Working for Me

[Kamunt]

I'm not even joking. Google, AOL, Yahoo!, MSN, Ask.com, even Dogpile, none of them will ever load a thing anymore when I try to search. Metacrawler works, apparently, but it doesn't come up with any results ever... When I say that they "don't work," I mean this quite literally. They'll start to load, but they'll stay forever stuck on the page I was just on. I'm at a loss. I did manage to download a horrid virus AND give it permission to go through my firewall about a month ago, but this is a new development.