I didnt realise it was possible to run more than 1 graphics card without Crossfire or some way to connect them, I mean if you have 1 image and you wish to have it span across 2 monitors could you do that using 2 independant GPU's?
Crossfire uses two (sometimes up to four) cards as one for increased performance. You do not gain display outputs.
You should be able to connect the cards individually (no crossfire) and use all the display outputs on each card. Note there is no increased performance this way and games will still only run off the primary card and it's group of monitors.