I had a few MDD boxes, but only one was working - Power supplies  

I put together the one working one with a FW400 board, for dual boot.  I guess this means that I have to finally will find time to get another one working with a FW800 board and try this out.

Thanks CJ_Miller, for your persistence.  Also for mentioning the MacOS9Lives site - I had seen it before, but not been there for ages.