late 2004 powermac and multiple graphics cards?

Hey,

I have a late 2004 powermac g5 that currently has the fx5200 graphics card. i want to know if i used pci graphics cards could i run 6 displays off this machine? i know it can be done on the mac pro's but what about the g5. can i use the pci slots as graphics card slots or will i have to get a mac pro?

If i can use the pci slots what would be the best card to use? i know the output would not be the best but it is going to be running 6 acer v193w 19inch screens with vga.

Thanks in advance