The best way to go about it is to go to
www.massystems.com and get one of their set ups. If you don't want to use their controllers, get a 2-slot which has the neo geo home system controller ports on it which you can just plug and play as well.
The only thing about the supernova and the two slot is that you might want to put a piece of particle board or some hard cardboard between the bottom of your MVS system and the Supernova because of the location of the nova's power supply. (it gets hot after a while because it was built to be run all day long)
If you don't, you may damage the MVS system which doesn't like it's bare motherboard bottom to touch the top of the supernova very much... Again, when you see it, it'll all make perfect sense.