You don't need a Quadro type card.
Try something like this (if you're on a tight budget): http://www.newegg.com/Product/Product.aspx?Item=N82E16814121469 also, take a look at myh sig - that card was for me a good "bang for the buck" compromise.
It's a bit on the cheap side, but what you want is a good "gamer" card with at least 1 gig of ram (more if you intend on doing heavy rendering), that will support 2 monitors. That one looks like it has ports for DVI, HDMI & std video. I'm not sure you can hook up all three but you might. Note also that it'll take up the space of 2 ports on the back of the box.
I have found that Nvidia drivers tend to be more stable with adsk products and drivers are easy to upgrade.
The way adsk is going, you'll need two monitors to really get any production work done. One for the drawing area and one for all the menus and dialog boxes.
Good luck,
Reid
Homebuilt box: I5-2500k, MSI P67A-GD65, 12gig DDR3 1600 ram, ASUS ENGTX460 Video card, WD Velociraptor WD4500HLHX HD, Win 7 64 pro.
