I was surfing the web and something downloaded on my computer and it pops up and tells me I have a trojan and brings up pops to antivrius software companys. I have used 3 different virus protectors and a spyware program and they found nothing. I cant get rid of the stupid pop-up thing though. Its in my taskbar and pop ups like every other minute. I Found the folder but when I go to delete it it says I need permission. What Do I do? Help would be greatly appreciated.