The File Checksum Integrity Verifier (FCIV) is a command-prompt utility
that computes and verifies cryptographic hash values of files. FCIV
can compute MD5 or SHA-1 cryptographic hash values. These values can be
displayed on the screen or saved in an XML file database for later use
and verification.
fciv filename more details : http://support.microsoft.com/kb/841290
You may also refer : list of file integrity monitoring tools