For anyone interested in importing this wonderful game, though, there is one tiny caveat. If the paddle controller is inside the GBA slot while the DS is closed shut, the handheld won't go into sleep mode. To clarify that statement, the game itself will sleep, but the peripheral will continue to suck the juice out of your DS (the greedy little thing).
It's okay, sweet paddle, we won't hold it against you. We love you just the way you are -- don't ever change. Let's hug it out and move on.