Nothing much to describe, apply to object or layer and hit preview.
noise off
<img src="http://dl.dropbox.com/u/34375299/Construct/Effects/Noise/Noise2.png" border="0">
noise on
<img src="http://dl.dropbox.com/u/34375299/Construct/Effects/Noise/Noise1.png" border="0">
Noise effect
Parameters:
- X Size - Horizontal size of noise
- Y Size - Vertical size of noise
- Modulation - 0-100% of modulation
- Speed - Speed of noise (thanks to Yarfapet)