OpenSUSE Install :: Unsupported Screen Resolution For Install?

I got my hands recently on openSUSE 10.2 (ppc) to put on my b&w powermac g3. i can boot from the cd and it gives me a text prompt and the choices install, rescue, and something to do with the network (which is whatever), and a not-very-helpful help option. so i type install, and my monitor says "input not supported." i figure, "ok, that's cool, i'll just plug in one of my old crt monitors 'cause it must be trying to use a resolution lower than my fancy-schmancy one supports." plug in the old one, restart, type "install," same thing. i'm not new to linux, but i don't really have any options with this prompt that any manner of googling or thread-hunting can uncover which allows me to specify the resolution at which the yast installer starts (or refresh rate, maybe that's it...) or lets me keep it in text mode through the installation. I tried typing "install textmode=1" which seems to do nothing special (same result as just "install") and just "textmode=1" (which is a fundamentally retarded approach, but what else am i supposed to do?). Once the operating system is installed and i can boot into a terminal, i figure can edit the xorg.config to use the resolution i want, but i can't very well install the system without seeing what i'm doing! It's just confusing 'cause it doesn't seem to like any display i give it.