Ok, I got a monitor with a vga port. Uninstalled the drivers, reinstalled again. Did the monitor swap and was able to switch over to 30hz interlaced, 640x480 true color once. Plugged in the arcade monitor and turned it on, wasn't able to see anything so I couldn't keep the settings after selecting apply. It also caused my LCD monitor to go out of frequency range so I had to use a third monitor to see what happened and start over.
The arcade monitor seems to be out of frequency now, because I only get a picture during boot, but not on Windows login or desktop. I re-tried the steps again and noticed when I checked to see all modes, I no longer get the 30hz interlaced option. Only 50, 59, 60, 75 and 85hz.
I'm baffled as to what to do next if the Nanao won't even show a flickering image beyond the boot screens.