Have you seen this screen?
If you have then you have a big problem and must be reading this post on another computer.
Depending on what country you are in the Interpol Virus will show a national police logo and title.
The whole idea is to instill fear that you have engaged in some terribly illegal activity, for which you could even go to prison for a long time. They say that they can stop this trouble if you pay them a certain amount of money, usually hundreds of dollars. Continue reading Interpol Virus Holding Your Computer For Ransom?