just do a search for "MAME cabs" or something like that. Running MAME in a cabinet output to a standard RGB monitor is a a pretty popular thing nowadays. You should be able to find lots of info on it.
edit: to cut overzealous correctors off at the pass, I realize he doesn't want to use MAME. But nonetheless much of the setup should be very similiar if not identical to MAME cabs...
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