There are plenty of programs available to remove noise from your images.
Here's a very incomplete list, if you know one you like and it is not listed, then please add it.
Neat Image is shareware. It features both a standalone version and a photoshop plugin. It makes a profile of your camera that you can apply to a set of photo's. Neat Image's home page is here
Picturecode's Noise Ninja is shareware. It filters out noise in 48 bit per pixel color space. It can batch process multiple images. It features both a standalone version and a photoshop plugin. Noise Ninja's home page is here
Grain surgery can add, remove or match grain (noise). It comes as a Photoshop plugin. Grain surgery's home page is here
Noiseware is shareware. It comes as a Photoshop plugin. Grain surgery's home page is here
Click NoiseRemove for a dedicated page on NoiseRemove
--Serge 17:50, 11 Dec 2004 (EST)