I wouldn't count on any particular card supporting 2 monitors unless it explicitly says so. However, Matrox used to make PCI cards for dual-monitor setups all the time. I believe this
card may suit your needs. I warn you, though, it is a heatsink-no-fan card, which means heat may be an issue. Be sure your computer is well-ventilated and that you never play video games on this sucker.
If you want to get cards that are a little better-documented and mainstream, the nVidia GeForce 5200 and ATI Radeon 9250 were some of the last cards to be sported on PCI connections, and I'm sure you can find reviews confirming whether they support dual-monitor solutions.
Edited by Ryan 3000, 21 July 2011 - 08:59 PM.
No pessimist ever discovered the secrets of the stars, or sailed to an uncharted land.