Antivirus for Teachers The District has changed it's Antivirus program and will no longer provide Sophos. Several Antivirus programs are now FREE to home users. Just follow their instructions to register and get your code. You may click on the links below and choose which Antivirus solution you would like for your personal computers. Avasat! seems to be a little better at cleaning out viruses. You can download Avast! Antivirus for Windows 95/98/2000/NT/XP/Vista\Windows 7 program. Or download AVG Antivirus for Windows 2000/XP/Vista\Windows 7 program.