VirusTotal - online virus and malware analyser

May be of use someday - I suggest you bookmark it

VirusTotal - Free Online Virus and Malware Scan

VirusTotal is a service that analyzes suspicious files and facilitates the quick detection of viruses, worms, trojans, and all kinds of malware detected by antivirus engines.

Specs:

• Free, independent service
  
• Use of multiple antivirus engines
  
• Real-time automatic updates of virus signatures
  
• Detailed results from each antivirus engine
  
• Real time global statistics

VirusTotal has been awarded by the American edition of PC World Magazine, one of the 100 best products of year 2007 in the Security Web Site category.

The 100 Best Products of 2007.