I don't know if anyone's interested in this, but I thought I'd throw it out there...
I have a pair of Act-Labs guns. I originally just screwed the control boxes onto the inner wall of the cabinert, but it was all just a big mess. I finally decided to remove the control boards and mount them together to make a single control board.
On the left side of the board is a USB interface board, meant to go into a rear slot on a PC. I removed the bracket and attached the board to a thin piece of wood using brass motherboard standoffs. This USB board can then be plugged into a USB header on the motherboard
To the right of that are the two control box motherboards, again mounted using brass motherboard standoffs. The wires to the guns were cut and wired to surface mount dual-gang Ethernet ports at the top of the bard. The monitor plugs into the DB-15 connector at the far right of the board.
Not very exciting, but it seemed useful. Those motherboard standoffs worked really well; by drilling a hole into the wood I was able to thread them in with pliers, and they stay in nice and tight, and I have a ton of those things lying around.
--Chris