Free File Integrity Checkers & Checksum Integrity verifier tools to check file integrity of downloaded files in Windows using MD5 & SHA1 cryptographic hashes for files.

I would like to build in some kind of checksum or md5 checking of the file to make sure it hasnt changed. Anyone have a clue how to do this in VB or know a dll/function I could use?<BR><BR>Thanks ...

Any idea what purpose including an MD5 Sum file within a zip file that you're downloading serves? I understand the algorithmic checking to make sure the file hasn't been modified. But I just ...