I've been having the same issues and appreciate the update in this thread about pins 15/16 being swapped - likely explains why the DVI port seems "dead" when connecting to a new Mac but works fine on older systems.
On the VGA side, I did get the MZ-M220W to work correctly with a DisplayPort-->VGA adapter, but to get the native 1680 x 1050 resolution needed for the stereo to work I had to patch the system with the utility "SwitchResX" (http://www.madrau.com/indexSRX4.html). It basically lets you supplement the OSX equivalent of modeline and thus define new monitor resolutions. The exact settings I used are in the lab at the moment, but I'll do my best to remember to post them tomorrow. It was not as straightforward as I had thought, but then again I did not bother to read the manual before playing with it and still solved the problem in about ten minutes. Olve
