Using a batch file here's what you can do:
COPY FILE.DBF B:\Backups COPY FILE1.DBF B:\Backups
Another way to do it is using the command Esentutl
(Windows Vista+)
ESENTUTL /y FILE.DBF /d B:\Backups\FILE.DBF ESENTUTL /y FILE1.DBF /d B:\Backups\FILE1.DBF