Not MAC savy. I demonstrated to a user how to change resolutions on a MAC G3 tower using OS 9.2; NEC 17 monitor. A few minutes later, the person came back and said the monitor stopped working. Apparently, the user tried out higher resolutions and the monitor went black. I tried the following to no avail. Zapped PRAM, deleted systems and monitor settings (reboot). I can boot using install CD or without any extensions. I can also attach a high end Sony Flat 20" TFT monitor which works, how do I get the NEC 17" monitor to work again with the G3. Thanks in advance.