Disclaimer: if there's a more appropriate place to post this query, please let me know and I'll move it. Here's my setup: I have three Macs and one PC sharing a wireless network with a Belkin N+ router and a 2 TB external HD shared via the router. The HD is formatted in NTFS as a legacy of originally being mostly used with the PC (and the router will only read NTFS.) I've installed NTFS-3G to be able to read and write to the drive from the Macs. Everything works dandy. My question: I'd like to be able to restrict access to one of the folders on the HD somehow; either to just one of the Macs, or via password. I have no clue where to start with this. Any ideas? Your help is most appreciated.