I think you're stuck with Parhelia, dude.
I have a bit of respect for the Matrox even though they get loads of bad press because they aren't the fastest gaming solution. they might not get 200+ FPS in most games, but they're almost always playable at medium resolutions. From what I've seen, they're almost always on par with the Radeon 9000 PRO, and that ain't that bad...
The really good part is their brilliant antialiassing implementation rocks, and they can run everything 1024*768 at 4x FSAA and get framerates like a Geforce4Ti4600 does.
I mean, I wouldn't recommend them for a raw gaming solution otherwise but I don't think it's the end of the world if you absolutely need a triple monitor setup... from what I've seen, owners of them are pleasantly surprised.