Protector Plus for Windows NT/2000 - Version 6.7.C18 An anti-virus software designed for Windows NT. It has an on-line program and a manual scan and clean program to detect and remove all types of viruses. The software is easy to install and use. Monthly upgrades can be downloaded free of cost. This software works on both Windows NT version 3.51 and 4.0. The same software can be used on the server as well as the woskstation.