Known incompatibility with ZNF3-150 and nVidia GF3 Ti cards?

I just got this board and it won't boot up past the initial screen
with either of my GF3 Ti cards in. I have a 200 and 500 both, and they
both go thru post and then go to another screen with a blinking cursor
in the upper left corner of the screen. If I take out the GF3 card
and put an old Lightspeed 128 in a pci slot it boots fine! Makes no
sense that an nVidia chipset wouldn't get along with nVidia cards, but
it may be planned that way too, to force me to buy an ATI card