Thank you to DarkArts_Astro for this article, I processed 12 images I took of the moon using PIPP & Registax 6. The article gives a clear, well-written explanation of a process that works. I am grateful. The software I used is freeware. Astra Image is a purchase-option for sharpening. It may well do better than I did on my first try.
Moon after stacking and before sharpening:
My images after processing in PIPP:
RAW pics sharpened and auto-contrast in Picassa to save them as jpg for upload: