SFTP and NULL FTP server
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My website is hosted on a VM running Windows 2008 R2 64-bit and running IIS v7.5.

I'm using Dreamweaver CS4. I see that Dreamweaver supports SFTP.

I want my user credentials encrypted when Dreamweaver logs in to initiate a file transfer, but I do not necessarily want the file transfer encrypted. (Don't need to encrypt HTML pages that people can download anyway.)

I found this free FTP server that says it supports SFTP, Vision Works':

[Null FTP SERVER][1]

My question is this, given what I've described, is SFTP the right protocol for me to use and does this look like a good solution?

TIA.

  [1]: http://www.vwsolutions.com/NullFTPServer/features.aspx "NULL FTP Server"