So I have an iMac, late 2006, with an 1.83GHz Core 2 Duo. It has a 17 inch screen, but that screen has been going crazy lately. It's completely unusable. So I've attached an Apple Cinema Display (the older model, with no camera), which I use as the main one. The problem is, whenever I boot from a CD, or go into Open Firmware, it shows up on my iMac's 17 inch screen, so I can barley see anything. I've taken apart this iMac before, and I know where the screen is attached. Could I just unplug the internal screen? If I did, would the external one be used as the main one, just like a Power Mac or Mac Pro? Would the iMac even boot? Thanks for any help.