Dennis, I am in kindof the same boat. I have 5 or 6 hospitals that I have secure FTP access with, but it is their servers so I have no idea how it is set up. We now have the need for 3-4 other sites to upload to us and what they are doing right now is using pkzip to zip and enrypt the files then upload to our everyday ftp server. I want to make this process easier for everyone by setting up a secure FTP so that they can automate their uploading with whatever FTP program they want and then we can copy the files and whatever with a script without having to unzip them with pkzip.
I have found a few things but nothing is working out at this point for me.