For 300D users I found this great suppliment for Eddies "Digital Imaging - Flats and Darks Explained".
http://www.covingtoninnovations.com/...300Dastro.html
Its by Michael Covington and looks specifially at what types of images to take (RAW, TIFF, JPEG) and the benefits of applying them to Eddies techniques. Plus how to apply your darks once you've taken them. All from a 300D perspective.
These two great articles work really well together.