I'll spare you the whole story, but get your PC checked before Monday, July 9th.
DNSChanger has been lurking around PCs for years, but there are still hundreds of thousands of computers that could be infected. Make sure that yours aren’t among them.
If you’ve gotten dubious emails in the past warning you about stuff like this – I get it, I have as well. Don't click the links in the email, if you don't want to. Go to a reputable news source like CNET and read about the DNSChanger...it'll give you links to the same places below.