We have a Mac-mini running 10.5.8 which already acts as a fileserver for our simple Windows (mixed XP/Vista) workgroup. The Mac-mini is on the same workgroup and the files are shared via SMB, FTP, and AFP. Basic file-sharing is working, and has been for some time.

We'd now like to add an additional directory/share which can be secured by a password so that only a small number on the network have access. Is this possible?

I've already tried creating the additional folder on the mac system, adding it to the shared folders, and limiting it to a specific "shared user", however it's not possible to log-in from an XP machine.

Adding a sub-directory to the currently working share and giving limiting it's access to the shared user doesn't work either.