Not sure why you would want to do that but you can set objects to open with whatever you want. You can also create Viewables of virtually anything you want provided you have a native application to publish them. Many formats are viewable in ProductView. PDFs, Models, drawings, etc. Even DXF and Iges. MS Office documents will open provided you have the application loaded on your workstation or other application associated to the file type.
My personal opinion is there is no need to have a 3rd party viewer.