Excellent list of free on-line scanners

Online Virus Scanners are user friendly, free and powerful tools accessible directly from your browser They will scan and automatically clean the system memory, all files and drives’ boot sectors. Some of these scanners even include the ability to enhanced detection and cleanup addresses rootkits and other sophisticated threats. The major advantage of using Online Virus Scanner is that you can use it without having to uninstall your existing data security product and it is free. As it is an online scanner, these are always up-to-date to combat the latest threats with the latest technologies.

You may use these free online scanning service  in conjunction with your antivirus product  to ensure the maximum protection for your PC.

Note:  These scanners support Internet Explorer / Firefox. To use the scanners, you may be required to install ActiveX (IE) or Addon files (Firefox) when prompted.

http://www.bitdefender.com/scanner/online/free.html

http://housecall.trendmicro.com/

http://www.eset.com/onlinescan/

http://cainternetsecurity.net/entscanner/

http://www.pandasecurity.com/homeusers/solutions/activescan/?

http://onecare.live.com/site/en-us/default.htm

http://www.kaspersky.com/virusscanner