Thanks for your reply. That gives me another way to accomplish my task. Actually last night I solved my problem another way by going to Edit > Preferences > Code Formatting (or Rewriting, can't remember) and made sure that lowercase was selected, then checked to allow DW to Override the tags. When I opened the "offensive" HTML doc, DW automatically overwrote the uppercase tags to lowercase.
Thanks for your suggestion. I like that one, too. Good for individual docs.
TCH is certainly the place to be. If I can't find my answer already posted in the Forum, you all are so quick to reply and very pleasant. I'm loving my new home!