How to change shutter speed on Nikon Coolpix L100?

I want to start taking light grafitti pictures like this:

http://blogs.nyu.edu/blogs/src334/samant鈥?/a>

I know how and I tried just now but I don't know how to change my shutter speed so I can't make words or anything..

So what I'm asking is on my camera, the Nikon Coolpix L100 can you change the shutter speed? And if you can, how?

Thanks!
How to change shutter speed on Nikon Coolpix L100?
From the specs this camera is full auto. Which means, the camera makes the decisions.



For that kind of control you're going to need a different camera - a high end point %26amp; shoot or an SLR.
How to change shutter speed on Nikon Coolpix L100?
Can't. No. Not available.