My 15-year-old son has been having trouble getting his homework done. I think (and he agrees) that the biggest problem is having the temptation of the internet, chatting with his friends, and so on when he is supposed to be doing his homework. So we agreed that we should disable his computer (a mac mini running Tiger) from 4 to 7 every day so he can focus on homework. I've tried parental controls in the past, but they're a pain, there's no way to schedule them, and there are ways to get around them. So I'm thinking there are two possible solutions. One would be to simply remove the computer from his room (unplug the computer from the keyboard, monitor, and so on and keep it in my office). But that's a pain to do every single day. The other solution would be to get an external firewire HD (he needs the disk space anyways), and install the OS on the HD. That way we'd only have to remove the HD to disable the computer. I've read that it's not easy to install the OS on the external HD, though, so this might not be the ideal route. Any thoughts from MR users? Any other ideas?