PowerMac G4 Quicksilver with THREE SCREENS possible?

i have powermac g4 quicksilver 733mhz 2 graphics cards (agp geforce2 mx , pci card, not sure which) can see on video.

http://youtu.be/f0zuefz4i4q

want add third pci card third screen (for special project have in mind). before start looking around purchase on ebay, know if possible system support , recognize third graphics card , recognize drivers it. guess if it's workable, should pci card. work on mac os x 10.4 or mac os x 10.5? how mac os 9?

has done this? recomendations appreciated.
thank in advance.

 

it works in os x , os 9. can have many card have slots.
read details: http://www.gearslutz.com/board/music-computers/15114-can-mac-g4-have-3-monitors.html

 

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