File Scanner

I need a file scanner that will find files in the local drives of the computer that contain a certain binary sequence (signature). Should look like this tool: <[login to view URL]> Only the text will be changed, and there should also be an option to scan a specific directory? (recursively) in addition to the option to scan all local drives. Each signature will be a file placed in a "signatures" directory. The name of the file will be the name of the virus, and the contents will be searched in each of the computer files. If a file (other than the signature file, of course) contains the signature - an alert should pop up with the virus name and the file it was found in. Each scanned file should be checked for a match against all the signature files.