There are times when you want to save your document as an HTML document. Word 2003 offers two choices - HTML and Filtered HTML. The former has a lot of extra tags that allow Word to retain the same visual fidelity as a .doc file, the latter just gives you clean, light html. If you are on an older version of Word, say Word 2000, you can download this little add-in which allows you to save filtered HTML:
Hope this comes in handy!