Diane,
It has to be said that noise is a pain in the BUTT.
I use this trick when I think that noise may impact upon the image.
When taking a shot I try to overexpose has much as possible without clipping the image. Turn the Blinkies on and they will show you area's that are starting to overexpose (or Clip).
The images may look awful on your camera. After you download them into the Elements Organiser take the images into the RAW Converter. Just below the White Balance adjustment you will see the Exposure slider, move this to the left to reduce the exposure of the image to make the image look normal again.
This technique is called "Shooting to the Right" and lifts the shadows of the image and hopefully reduces noise. I also understand that it can add more colour to your image, bit I've been hard pushed to see this.
Let me know how you get on or if you need more info.
http://ronbigelow.com/articles/articles.htmHave a read on Noise and Digital Exposure.
Ed
If you want to edit any of my images to demonstrate points/techniques to either myself or others please feel free to do so.
Still learning with Canon 40D, 28-135mm, 100-400mm L and Elements 6.
Any Advice greatfully received.