People have made cable release brackets that attach to many cameras.
Here is one type that attaches with a strap.
I have seen some that are made from an aluminum bar that is bent into a "U" shape. It attaches to the tripod mount on the bottom of the camera. It curves around one end of the camera and extends over the shutter button. The hole is drilled and threaded just above the shutter button. A standard cable release screws into the hole.
i really want a 'z - 57' digi cam but i have to use a remote control is thier a feature on the camera that allows for a remote control lead (or wireless)