Advice on rendering water with v-ray please.

[shubba81]

Can someone please give me some advice on what is the best method for rendering water in vray.
I have tried using a noise displacement, as suggested in this tutorial:

http://www.cgpinoy.org/vray-for-sketchup-tutorials-f97/water-renderings-t10835.htm

But the water just looks like a reflective grey fuss.

Any help would be greatly appreciated.