Derek,
You can run os 9.2 with a little thing called os 9 helper,I have os 9.2(and debian) running on my 604e mac clone with with it,and bootx.Works good
Is that the same as XPostFacto?I've considered trying one of those to update to 9.2.2, but I never notice any difference when I use 9.2.2 on an iMac vs. 9.1 on a 7500. Is there any compelling reason to update to 9.2? Does it affect bootx?
-jr