Hi Carole, I think I know what is happening.
Word incorporates images into the document.
When you save it as HTML it creates new image files for each of the graphics. These are not animated. View the webpage in Netscape and right-click on the image to find the file name. You may also try creating your page as an HTML document rather than just saving it as HTML when it is finished. You should also make sure that you have the Word web publishing extensions installed.