I want 3 monitors and to connect my projector to my PC. I currently have a graphics card in my PCI E port with 2 connections, but can I get an AGP graphics card with 2 ports and run them at the same time?
I don't believe you'd have both a PCI-e and AGP slot on your motherboard. Can you check?
You could get either a PCI or PCI-e x1 video card depending on what slots you actually have open.
PCI EVGA GeForce 8400 GS
PCI-e x1 HIS Radeon HD 4350
If you're referring to one of the old hybrid boards (like the ASRock 939Dual-SATAII), then I believe the answer is no. If I recall there was either a jumper setting or BIOS setting that told the motherboard which graphic card slot to power. You couldn't use both simultaneously.