I currently running my rig with Avid Xpress 3.5 and have a dual monitor setup using 2 Samsung 19" CRT's via ATI 9700pro video card. I want to add a third monitor which is a LCD for running other programs IE aftereffects so I don't have to switch from avid all the time. I want a PCI compatible card that is DX9 compatible and won't conflict with my existing ATI 9700pro drivers. Does anyone have any suggestions that will go with this videocard. I'm limited on funds so Matrox is out. Thanks.

Try search ultramon for working configurations.

http://www.realtimesoft.com/multimon/search.asp

I think you're looking for a Radeon 8500, it's PCI with DVI out but I'm not sure if it does DX9. Wow, that was an alphabet soup. Oh well.