i plan on running a PC, DC, and PS2 all on my PC monitor in my cabinet and im about a month away from having this complete. I plan on using DB25 connectors to switch system controls, and hacked console controllers. If you have no idea what im talking about check out this site.
http://mywebpages.comcast.net/jdpyle1/index.htmI got my ideas from them and kind of expanded on them for my needs. basicly you hack a console controller and solder wires from the button contact to a DB25 connector, that connector will plug into the ones coming off of your arcade control panel. then u plug in ur hacked controller and play. and if youre using a PC monitor you will need a VGA converter, they have some good ones at
www.liksang.comlet me know if you need any more help, I know there isnt a lot documented out there on this because I was looking into how to do this 2 weeks ago