AnalogX Script Defender will intercept any request to execute the most common scripting types used in virus attacks, such as Visual Basic Scripting (.VBS), Java Script (.JS), etc and can be configured to intercept new script extensions as needed.
Size: 400KB
ArcaMicroScan is a free scanner for a quick and complete virus check as well as cleaning of any possible infections. For OS: Windows 98/Me/NT/2000/XP/2003.
Size: 1.53MB
AV Defs Updater for F-PROT for DOS, an F-PROT updater / update utility, that renews your F-PROT for DOS antivirus definitions in the background and enables the automated creation of a set of emergency diskettes allowing you to perform a clean boot and check for viruses.
Free for home users on non-commercial computers. You have to register your copy and supply them your email address so that they can send you a license key to activate the program. This program has full-time scanning, and will alert you when there is a virus found.