Ron posted recently an update notice for Karen's Hasher: http://www.wilderssecurity.com/showthread.php?t=90531 Karen has several very nice, free, utilities !!! Her site: http://www.karenware.com/ Her Power Tools: http://www.karenware.com/powertools/powertools.asp Her Hasher: http://www.karenware.com/powertools/pthasher.asp While I was posting this, I just saw that she upgraded her Hasher to Version 2.2.1. She frequently updates her very nice tools !!! I am really happy that Karen has added the option to verify a checksum with her Hasher. Thanks Karen !!! A little example follows about checking my HOSTS file on my W98SE machine. (sorry, this was still using version 2.2). I opened Karen’s Hasher. I went to Hash Individual Files. By using Add Files, I browsed to my HOSTS file.