You can interface a GunCon with MAME. I can't seem to find the correct info, as all the links are dead. There's drivers for it, and I assume that you'd use a Playstation-to-USB adapter for the interface. Originally, only TV and arcade monitors were supported, but CRT PC monitor support was added later. It looks like PC monitors require you to be really close though, but I can't say for certain. Try searching the Main board.