When making nightshots , big enlargements or cropping our files , we need to get rid of excessive noise . Here are some ways to achieve this :

http://www.fredmiranda.com/Action_profilesPage/index.html

http://www.2morrow.dk/75ppi/coolpix/actions/

http://www.ddisoftware.com/qimage/

http://home.att.net/~f.croce/Downloads/ForrestNoiseRemoval/NoiseRemovalforDigitalCameras.htm

http://members.aol.com/_ht_a/coolato/digitaltechniques.html

http://netnet.net/~llueck/NR.htm