I need some help here... I setup my AppleTV to show the contents of my iMac's hard drive when I go into the "Files" section. Instead I would like for it to access a firewire drive that is connected to my iMac that contains several video files. I cannot figure out how to remove the link to the iMac drive and have it connect to something else. It is also not showing me the video files that are on the AppleTV inside the Movies folder since I did this.