I have found an anti-virus which can be installed in your flash drive,iPod, portable hard drive or a CD to protect from any virus it is called ClamWin antivirus its a portable application so you can used it everywhere you want
Features
ClamWin is a Free Antivirus for Microsoft Windows. It provides a graphical user interface to the Clam AntiVirus engine. It features:
- High detection rates for viruses and spyware
- Regular virus database updates. ClamAV team regularly updates virus databases to include a new virus/variant immediately after it appears
- Standalone Virus Scanner
Please note that ClamWin Free Antivirus does not include an on-access real-time scanner, that is, you need to manually scan a file in order to detect a virus or spyware. Also, ClamWin Portable has scheduled scans and updates disabled as they are not used in a portable scenario.
download it here:tutorials for newbies