Starshine wrote:can you explain the wiring thing a little more to me? >.<
The Game Boy link cables don't have all 6 potential pins wired. Most only have 4 wired; ground, clock and the two data lines. More rarely, some cables have a 5th wire that connects to the Game Boy's 5v pin.
The keyboard needs power to operate and if you want to have the Game Boy power the keyboard, you'll need to find a cable that has that 5th pin wired or you'll need to modify one of the 4 wire cables by opening the shell around the pins and moving the wire connected to the data-out that you won't use to the 5v pin.
The other option, while perhaps less than ideal, is to wire a battery clip or external power supply to the pins for ground and 5v. In my experience most keyboards are totally happy running at 6v, so a battery clip with two A-type batteries of any size would work, but your mileage may vary.