Take a camera, preferably a digital one, and set down the shutter speed to as low as possible. I think the DSLR has a bulb function which allows you to keep the shutter open as long you want.
Lower your ISO to as low as you can get it.
You need a stand because motion blur sucks. Prepare everything in a dark room since your light sensitivity is gonna be crazy.
Then you need some lights, the stronger the better. You start the picture taking and wave your lights and shit around and you should get something like this
