Dr. Bott has announced a VGA adapter product, the gHead, allowing monitorless servers to easily be restarted. The gHead also provides advanced monitor resolutions not typically found in "out of the box" displays. According to Dr. Bott:
gHEAD is a VGA to VGA adapter that is two products in one....
Headless Server Killer!
The gHEAD allows Macintosh G3 & G4s to be operated and restarted without a monitor. Perfect for servers or machines accessed remotely. Also perfect for machines that might be restarted when not selected on a KVM Switch like the MoniSwitch.Resolution Enabler!
The gHEAD opens resolutions and refresh rates not available by default on many monitors, up to 1920 x 1440.
The gHead is available for US$19.95. You can find more information at the Dr. Bott web site.