msdn.microsoft.com/en-us/library/ms137656.aspx

social.msdn.microsoft.com/forums/en-US/sqlintegrationservices/thread/3713e9a5-343a-4c5b-ac5d-1508cd5ab8be/

www.proteanit.com/b/2008/02/13/ssis-ftp-task-code-to-set-the-password/