Can you describe "blank screen"? You can set Tools > Options > View > Default
View to "View saved in the file". Then, if you customize your blank.pot and
give it no "normal" slides and you set the view to your preference (e.g. close
the Outline pane and the Task pane), you can save the blank.pot and you'll get
the view you want. See:
Create a default "blank" presentation with your own defaults
http://www.rdpslides.com/pptfaq/FAQ00245.htm
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Sonia Coleman
Microsoft PowerPoint MVP Team
Autorun Software, Templates and Tutorials
http://www.soniacoleman.com