Norton AntiVirus 3.0 & 4.0 for DOS/Windows Download this file: Filename: 0510I16.EXE File Creation Date: May, 10 File Release Date: May, 12 Filesize: 2.94 MB 1. Run the file. 2. Follow the instructions on the screen. 3. Start Norton AntiVirus and scan your drive before you reboot your computer to activate the new virus definitions and rebuild critical files. 4. Restart your computer so that Auto-Protect uses the new definitions.