dual monitor capable

I'm spec'ing a Dell for a user here, but would like some input from anyone
who has experience setting up a linux box with a Matrox G400, which can do
the dual monitor coolness. =)

Any thoughts/regrets on the card? Which drivers did you use to get the
dual-headed coolness to work, free or commercial? If there is another card
that you could have purchased instead, what is it?

Thanks,
marco