Recommend hardware - dual head, open drivers?

[Fredrik Jonson]

Hi,

Can anyone recommend a graphics card with the following specs:

 * Open source drivers, I don't want closed source drivers.
 * Dual head - supporting two separate desktops/screens, not
   one huge screen split over two displays (don't know the
   technical term for these modes?).
 * PCIe 1x or 16x (or plain old pci).
 * Not too expensive. Today I don't play games and only use 2D,
   so I don't believe I need a 3D-monster.

Thanks in advance,
-- 
Fredrik Jonson