Virus

So this warning showed up on the computer - A Virus has Attacked! Get Antivirus Live!
Turns out this is a virus. I stopped short of giving it my VISA. Very clever, but it had to stop the annoying messages that were driving me to sign up, and that made me suspicious.
I was looking for my recovery disk when I found the book that came with my PC. All I had to do was System Restore to back to Saturday, before the nasty thing came on board. It came through Internet Explorer, I know because I couldn't find info on it on that program. Firefox gave me the info, though not the easy recovery. I can try telling wikipedia.