Think Dreamweaver or FrontPage – only without having to purchase them
http://www.nvu.com/index.php
I have to say, I hate their logo, looks like a pharmaceutical company or something, but Nvu came recommended to me recently. I downloaded it, installed it and tested it in about 11 minutes. It basically lets you go from WYSIWYG Editing Mode and HTML. I haven't used it a lot, because I am a big fan of Dreamweaver, but I did do the test of the free template (above) using this tool and it worked great. Really easy for non-technical types with no HTML experience.