JoomSEF Extensions Manager shows me that Installed SEF Extensions include something called NewsFeeds, with the active handler "JoomSEF Extension" selected.
Then, Components without SEF Extension installed includes Ninja RSS Syndicator, with several options for Active Handler. I clicked on Active Handler item until it read "Not Using SEF", and then refreshed the home page, and amazingly, IT WORKED!!!
Thank you very much!!
One further question: We want to our feed items to scroll in the area that now displays the RSS button. Does Ninja have a 'read' option that we can activate to scroll our items? Or do we use a joomla reader?