right now, in my security preferences, i have Personal File Sharing, Windows Sharing, Personal Web Sharing, and Remote Login all enabled. When I'm in a wireless network, my friend can remotely login to my computer and he has access to all ofthe files on my hard drive. I want to limit this to where people can only access certain folders\volumes on my computer and external hard drive. How can I do this? I've been referred to sharepoints, but I don't really understand it.