I wish those adding comments would look over the whole thread first to see if a program has already been mentioned.
I just tested Webcoder 2010, and corresponded with its very nice author.
Unfortunately, while it has an active preview, one has to hit the F12 key every time one wants a refresh. I have been looking for a program that has an effective auto-refresh.
In answer to the query, what did I think of the Microsoft Sharepoint, the answer is that the preview was well executed, but the HTML editing functions were way too few compared with most solid HTML editors.
Thank you all of your contributions. You have inspired me to keep on looking.