How do you fix a wii nunchuk?

>>>Yes i believe you can, the game isn't out yet so i have no sure proof, but in the gameplay demo on E3 Wii Sports resort has a jet ski game that requires both the wii remote and nunchuck. So i believe you can. <5-23-09>OK im getting one but on the images it looks like you pull out a stopper and under is the nunchuck socket

http://yourhealthislow.files.Wordpress.com/2009/09/wii-motionplus.jpg