If two files have the same MD5 sum, the files are exactly alike - which is why MD5 "fingerprints" can verify whether or not your downloaded file got corrupted in transit.

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 ...

If you're doing the MD5 check as part of copying the directory structure, then you can use rsync -c which will copy the files and compute/verify the MD5 hashes on the fly.

MD5 File And Folder Comparator Lite ($16; free, feature-limited demo) is a useful tool for doing two slightly-different tasks: Verifying that two versions of a single file are byte-for-byte ...