Hello, I am going to be teaching a basic Mac course. The computers have Tiger 10.4. My new Macbook has Leopard. I need to be able to load Tiger into Parallels so that I can switch back and forth between operating systems which presenting such via a digital projector. On my Macbook, using Parallels, I now have: Windows XP, Windows Vista, and Windows 7 (4 GB RAM). I use these programs to teach basic PC. Is there a way I can load a "legal" copy of Tiger 10.4 into Parallels using Leopard as the host operating system? thanks in advance, I really need this to work. greg gregorywest(at)bell.net