>I have been using a series of WinAPI commands to send data to an FTP site. The site has now switched to SFTP and I am no longer able to send data. Can anyone point me in the right direction on what I have to do to use VFP to communicate with a SFTP site.

There are some activex on the internet that do SFTP.
http://www.chilkatsoft.com/ssh-sftp-activex.asp