SFTP and "FTP over SSH" are two separate things, and none of them are SSL-related (as someone else suggested). SFTP is a sub-protocol of SSH, while "FTP over SSH" is good / bad FTP tunneling over an SSH port forwarding.
Anyway, what you need is the SSH Delphi library. I was unable to find a free SSH library for Delphi and finished buying SecureBlackbox (http://www.eldos.com/), which, by the way, is great, although SecureBridge (http://www.devart.com) also looks pretty good .
davea
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