Sinko, I got all the buttons and joysticks off of E-bay. They are Suzo happ joysticks (8 way) and I just ordered a Happ trackball for Golden Tee! I got them from a e-bay seller named Twisted Quarter. The blue buttons came prewire for leds but the orange ones did not. I'm in the process of getting them to light up with individual LEDs that I got from radio shack.
A little more info about the system:
The PC is an old computer that I retired. It's an old Penium4 that is in the cabinet. The control from the control panel to the board is done through an IPAC4. You can get it here. http://ultimarc.com/ipac1.html
You can see the IPAC 4 in the photo showing the bottom of the control panel. It looks like a small PC board.
The IPAC 4 converts the movements of the joysticks/buttons to a keyboard input. The PC sees it as a keyboard letter. It's pretty simple. There is no software that had to be installed on the computer. The IPAC4 connects through a USB connection on the PC.
The computer is connected to an old TV that I had. You need a VGA to RCA converter (depending on what TV you have - you could do it via HDMI if you have a newer TV.) Since the TV that I had was old, it had a RCA video input . I had to convert the VGA to RCA so I needed a converter box. I prepared the graphics in Adobe Photoshop and had some guy print the marque. It's lit up with a florescent light.
The software for the games is all over the internet. Search MAME - Multiple Arcade Machine Emulator. You can even add Atari, Nintendo, Super NES, Sega games. Pretty awesome.