Why not install a third party app? One with secure shared files. You'd have to install the clients on all machines, and run a memo out to all users on how to use it, but that way you could maintain control and keep it secure.

You could even setup an FTP on the server. Each user would have a user account and password. Again I don't know the purpose of the file sharing, but that would definitely work.

Then all they'd need is a browser to connect to the share. You could set file permissions, separate it from the OS itself, and have a log file generated for the activity.

http://www.coreftp.com/index2.html

http://www.tucows.com/preview/195147.html

http://www.thefreecountry.com/webmas...pclients.shtml

there are several free software applications available to do this. With an FTP you can create both a group share where all users would have access and then individual shares where each would have a specific password/username along with access to individual folders and files. YOu can set read/write/append/delete access as well.

Is that not an option?