Sorry about that, I'm back now. I had to take my wife to the local Chinese Buffet for a little grazing with the in-laws.
You don't want to use that wiring block unless you have a straight through cable with a centronics end. If your thinking of using a printer cable don't do it. Printer cables don't use all the pins so they don't contain enough wires. This terminal block looks to me like it would complicate things unecessarily.
I used a much simpler and cheaper 25 pin serial extension cable. I think its also a pretty clean way to go.

Just make sure whatever cable you decide to use is a straight through cable with a wire for every pin. If your doing a joypad hack you might want to use a terminal block to simplify the wiring between the plug and your hack.