I know this is a quite old thread, and I write this just in case the OP still checks these forums now and then.
Just recently I was able to salvage these drivers mentioned from Number Nine's old website using the Wayback machine. Of the drivers I managed to obatin were PREP8.EXE, PREP32.EXE, SETUP.EXE (+SETUP.DAT), INIT.EXE, DEMO.EXE and NTSC32.EXE. I also got a general price-list with product numbers and specs.
I haven't tested these drivers with my cards yet, but I see that the product numbers in the list differs somewhat from the cards I have (unless I'm looking at the serial numbers). In the case anyone has any of the Revolution graphics cards, may you please confirm that the cards I have (
http://www.oldibmpc.sitesled.com/Expansion cards/Number 9 Computer Company.html ) are indeed cards in the Revolution series?