Years ago I wrote an article on setting up a blind drop FTP server   I was searching for some information and ran across an updated article using FTP 7.5.  Funny thing I recently setup a blind drop using FTP 7.5 and referred to my article on permissions. 

http://blogs.msdn.com/vivekkum/archive/2009/05/10/blind-drop-ftp-in-iis-7-7-5.aspx

btw – here is a Blind Get, I’ve not tried on FTP 7.5, the permissions should be similar. 

http://www.iislogs.com/articles/blindget/

Hope this helps

Steve Schofield

Microsoft MVP – IIS