Protector Plus for Windws 3.x and DOS - Version 7.1.B01 Protector Plus is an antivirus software package developed for Windows 3.x and DOS platforms. The package has separate device drivers for Windows 3.x and DOS that will detect viruses on-line. Separate scan and cure programs are also available for Windows 3.x and DOS. The software is easy to install and use. Monthly upgrades can be downloaded free of cost. This 30 day demo program can be registered for US$ 29.95. Site licences are also available.