README.txt

MD5 Checksums are used to establish the code integrity of software you
download. Using the md5sums grants you more security.

The file "MD5SUMS" contains a list of files and their MD5 Checksums.

Download your chosen file and also the file "MD5SUMS".  

Verify whether your chosen downloaded file was successful by 
determining the MD5 Checksum for your downloaded file.

For Linux
  To determine the MD5 Checksum for your downloaded file (on Linux) execute:
  md5sum your-downloaded-file

  Compare your downloaded file's MD5 Checksum with the MD5 Checksum listed in 
  file "MD5SUMS".  If both are the same then the download was successful.

For MS Windows XP
  MS Windows XP does not have a utility to determine the MD5 Checksum for a file.
  But you can readily download a utility to use on MS Windows XP.  You can 
  do a search using the seach engine: http://www.google.com and use the 
  search string:
  
    MD5 Checksums Windows
  
  One website that contains MD5 Checksum utilities that can be downloaded 
  (for Windows XP) is:
  
    http://www.openoffice.org/dev_docs/using_md5sums.html#content
  
If you should have difficulty determining your MD5 Checksum for your 
downloaded file, then contact us at the following email address:
  
itiswebmaster@itis.gov