It is the one posted by tecneeq in the 6th post of that thread. But my problem isn't lack of docs, it's not being able to understand the docs. I've tried all 6 mode settings for 640x480, 1024x768, and "multiple scan 21" without getting anything on the monitor.

I'm beginning to suspect the PowerMac is toast. It was working when I last ran it about a year ago, but I'm noticing there is no startup chime, and the HD spins up but I don't hear any HD activity after that. So maybe there's a hardware problem - but shouldn't I at least see a Sad Mac or something? What kind of hardware problem might cause no chime, no video, no anything?