This depends a lot on the type of video card you will be using. For newer motherboards you will be using PCI express. Older motherboards will require AGP. Even older boards may even demand PCI.
For AGP I'd recommend the Matrox P650 video card. It's what I purchased and it has worked fine. It will drive to 2001FP's at 1600x1200 in digital mode just fine. However, it's not a 3d card so if you're a gamer, another card may suit you better.
I don't really have any experience with PCI express so it's hard for me to make a good recommendation. I know there are plenty of cards on the market which have dual DVI. But I don't know which ones are capable of running dual screens at 1600x1200 full digital.
Newegg has giant listing if dual DVI cards which can be found
here .