Well, it's been nearly 2 years since I abandoned my MAME cab idea, and this board. I've been itching to finally build it, but there's one little area I'm having trouble finding info on. I remember about the time I left, there was some discussion going on about an interface card that would allow us to use a Happ lightgun on a PC. I've been searching but all I can find are references to other lightguns. Did anything ever come of that interface or was it just vaporware?