I don't really need the J-pac i think. I just need a proper cable that goes from my videocard to the arcade monitor.
The J-pac can filter out bad signals to the monitor and connect a jamma cabinet straight to your pc.
Since i'm gonna flash the bios of my videocard so it outputs 15khz on boot/startup + use soft15khz (or CRT-emu),i don't need the jpac for filtering out bad signals.
And for connections i allready bought usb encoders that are basicly game controllers where i hook the buttons and joysticks to.
So the only thing i need is a proper cable and know where to hook it up to exactly
I will have to do a little research on that part.