SilverFast's iSRD tool handles dust and scratch removal very efficiently and very effectively if you know what you are doing. Don't want to toot my horn here, but all this is explained in great detail in my book on SilverFast 8. As for the rest of it, some editing is best done with scanner software and some with say LR/PS, and some it doesn't matter were you make the corrctions. I also discuss all these options in detail. There is much to this than fits nicely into a Forum post. You may also with to look uo my previous (free to LuLa subscribers) articles on this website about film scanning if you prefer not to invest in the ebook.