[Zope] Dots versus underscore in DTML

I know dots in file names are important when submitting the pages to the search engines. When I use them however, I'll loose the view tab(folder) when trying to view say index.html and I have to click on the file and then view it. If the file was named index_html I could just click on the view tab in the folder to view it. Is it possible to have dots in my methods and still have the view tabs on my folders? Anyone? George