Jaron got it sorted out by turning off all the extraneous 3D hardware acceleration on the card which is outside of what Direct3D already does.
I guess he hasn't had a chance to post his success running the Aquarium on 2 screens yet (It already worked in his laptop, he was just trying to get it to work on the SGI box).
He also found a friend in the chatroom, our resident Silicon Graphics junkie, BeefJerky.