Greetings, I had a number of viruses on my old AMD/Athlon computer and I ran several virus checkers - Adware (Lavasoft) & Stinger? & Norton Antivirus. I was surprised to see so many of those nasty bugs & viruses that I've read and heard about listed at the end of the scans. Then a colleague advised me to run Nu that he had downloaded - just to make sure that my PC was working in top condition. Now I get the following:- "Access to specified device, path or file is denied" with no "Open" displayed in the menu and no programs will open unless I go to the 'Run' in the StartUp Menu. What have I done!? and how do I undo what I've done...? Anybody?