In order to guard against file corruption or tampering, I compute the MD5 fingerprint of files available for download. After you download the file, you can compute this value and compare it to what's listed on my Web page. If the values are different, then the file is corrupt and should not be used.
I compute the MD5 fingerprint using a public
domain command-line MD5 implementation for MS-DOS/Windows which is available
from John Walker (author of the venerable @FANG and co-author of AutoCAD).