Are there any free anti-virus programs?
Yes, there are still a few. Alwill Software produces Avast 4Home, which is a free version of their AV for home users. Grisoft’s AVG is still free. Softwin also has a free AV called BitDefender (previously known as Anti Virus eXpert or AVX). Personal use of Anti Vir is also free. Free F-Prot for DOS uses the same definition file as the Windows version. It can be run in command-line mode on Windows.