Kenny, yes, it works really well. It is not as in your face as the Neat Image stuff, which I also have and use some times, but never quite figured out the controls for. This has no controls. It's an action you pic the ISO you used for the shot, then hit the run button. Does a fine job, looks very natural and only seems to get the background graininess, which doesn't seem possible, but looks like it anyway. 
Here's the page with all their software
, Look for stuff for your camera and the action with the name ISOR in it, although the one I got for the 1D banding problem works fine on the 40D jpg's also. 1D ISOR-BR Action (Noise/banding removal)
BTW, they say it's for CS2, but of course, works fine in CS3 anyway.
Dan, the flash of red on the throat feathers only happens when the light is from a certain angle. Only the bird can turn it's head to get it, and I found last summer that even flash does not always bring it out.