3 monitors on a Mac Pro 8 core

Anyone know of an easy way to get 3 monitors to work with Cubase (or any software) without using an extra pci video card (my slots are used up). I have an Apple 8 core Mac Pro. Love Hans many monitor setup. I have two swervable View Sonics that I’d like to swing 90 degrees for a 2 page Portrait view of full orchestral scores in Sibelius via rewire and then use my cinema for sequencing window from Cubase. Anyone doing that or have a simple solution?

MacPro 3,1
2 x 2.8 GHz Quad-Core Intel Xeon
NVIDIA GeForce 8800 GT 512 MB
Number of Processors: 2
Total Number of Cores: 8
L2 Cache (per Processor): 12 MB
Memory: 10 GB
Bus Speed: 1.6 GHz

Hello,
Our MPs have three monitor ports - a dual-link dvi and two display port outputs, all independent. I suppose another graphics card will do it for you.
Hugh

Can you post a picture or link? thanks

Mine is an older model, so maybe they changed the card.

What is your video card? Maybe I could just replace mine if that’ll work.

el profe