Hey, I just ran a virus scan on my computer, and the anti-virus program identified 3 files that were security risk, or "backdoor programs". I attempted to delete them but it said the files could not be deleted because they were in use by windows. I do have a program on my computer called "Zonealarm" which prevents any program from accessing the internet unless I specifically allow it to. Still though, I wonder how I should go about dealing with this files? What potential harm could come from having them?