So have you been one who has been presented with a window that tells you that your PC is full of malware including worms, trojans, and keyloggers, OH MY!
This happens sometimes when you web searches using Google and Yahoo. Other instances, you may browse to a web site and BAM! you get that same message about malware infestations on your PC.
This appears to be a message window but it is actually an Internet Explorer window. You should not click on any button or the X to close this window. In this specific case, the criminal attacker disabled the user from going to the Start Bar and right clicking on the IE window to close it. However, you can just bring up the Task Manager and under the Applications tab, close the Internet Explorer application from there. Any other clicking on this window will get your PC infected.
Stay safe out there and the weekend is almost upon us. Have a fabulous weekend!!