The purpose of this program is to quickly check the MD5 or SHA1 checksum of a given file against the checksum database of VirusTotal.com. If the checksum matches a file already scanned by VirusTotal.com then the results of 41 anti-virus scanners are shown. This program adds an Explorer context menu item to all files that, when selected, computes the MD5sum or SHA1sum and posts it to VirusTotal.com