ClamWin is a Free Antivirusfor Microsoft Windows 98/Me/2000/XP/2003. It provides a graphical user interface to the Clam AntiVirus engine. It features a command line interface for scanning files, updating the virus definitions, and a daemon for faster scanning needed on high performance systems.
ClamWin Free Antivirus For Windows is a completely free and open source anti-virus software package. It uses the GNU General Public License by the Free Software Foundation.

ClamWin Free Antivirus features:
High detection rates for viruses and spyware;
Scanning Scheduler;
Automatic downloads of Virus Database updates. ClamAV team regularly updates Virus Databases to include a new virus/variant immediately after it appears;
Standalone Virus Scanner;
Right-Click Menu Integration to Microsoft Windows Explorer;
Addin to Microsoft Outlook to remove virus-infected attachments automatically. Built-in support for mbox, Maildir and raw mail files
Built-in support for RAR (2.0), Zip, Gzip, Bzip2, Tar, MS OLE2, MS Cabinet files, MS CHM (Compressed HTML), MS SZDD
Built-in support for Portable Executable files compressed with UPX, FSG, and Petite

Changes in Version 0.95.1 - April 14, 2009:
- Updated ClamAV engine to version 0.95.1
- better ZIP archive handling
- fixed possible false positive detection
- a lot of other bug fixes fixes and improvements

Spoiler

http://usershare.net/ski4w5ncf3p2