and put the shutter down to Bulb./quote]
what is BULB and how does it work???
BULB mode is when the shutter stays open for as long as you hold the shutter release button down.
So if you press the shutter release and keep it held for one minute, the shutter will stay open for one minute. It will close as soon as you let go.
Getting to BULB mode might be different for every camera, but for me, I need to go to Manual mode, and set my shutter as slow as possible, past 30 seconds, and then it will say BULB.
So I recommend either trying that, or reading your manual.