Actually, no. I started out using Microsoft Word, but the problem was that it wasn't quite WYSIWYG, as you say, and things like the front page poll (that we had at the time but that I didn't update that often) simply wouldn't show up in the editing. I guess my copy of Word is old (I think it's '97) so it's got HTML editing capabilities but can't handle the non-HTML stuff at all. It doesn't even like some HTML code itself like sizes as percentages.
So I switched to Microsoft FrontPage. This was quite a while ago. It's pretty handy, I can do a lot without having to learn HTML or deal with the awkwardness of Microsoft Word, though in its attempt to be robust I do often have to deal with extraneous HTML tags everywhere.