Buy a motherboard with an AGP slot.
Yes, AGP is completely backwards compatible.
An AGP video card.
An AGP slot is a post-PCI/pre-PCIx graphic card interface bus. It was a step up from the PCI video cards, but were phased out with the PCIx standard.
No.. AGP is the Graphics Port and PCI Express is Multi-Purpose..
AGP
Yes.
I believe you can get PCI, PCI-X or AGP video capture cards. Each card would need the corresponding slot, such as an AGP card would require an AGP slot.
PCI express x16 is a faster slot
No. You will need to replace your motherboard to get PCI-E.
video card
No.
its 132 pins