Here's some photos of how I mounted the monitor. I cut some holder blocks from 3/4 mdf with my scroll saw and drilled one pocket hole in each so I could screw it to the 3/4" mdf bezel. Quick and easy. lay and center the monitor, position the holders and screw them in place. Pocket hole joinery is the bomb. It's strong, secure, and keeps the cabinet clean inside.
I'm using advmenu with animated snaps on mame4all. Awesome menu.