Antivirus for XP, Business use - Immunet free, based on Clam AV

USED And RECOMMENDED
http://www.immunet.com/free/index.html


Background:

Clam AV is an open source AV engine.  By itself, it is not a realtime scanner; it is also command line driven.  However there are some GUI wrappers.  This wikipedia articles lists several
http://en.wikipedia.org/wiki/Clam_AntiVirus


http://www.clamav.net/lang/en/about/win32/
Also a Sentinel release for Windows has real-time scanning, as the above does



If you want to get into the genesis of the ports of the Unix version to Windows and what is what, see the following:
http://www.wilderssecurity.com/threads/clamav-for-windows-with-realtime-scanning.279352/