Acer Aspire M1935-3322W8
As is you have integrated graphics, you`d have to pop open the case, but I`m sure you have a pci express slot in there. What year was this pc built. AGP is quite old.
Some graphics nowadays are even built into the cpu ( I hear ) it`s gettin outta hand. Pop off the side and look for a long odd colored slot, black, blue, green etc.
PCI slots are white.
This is a shot of a pci express slot.