Automating the Viewer
The PowerPoint 2003 Viewer doesn't support automation, but the earlier PowerPoint 97/2000 Viewer does.
A Microsoft article that explains how to automate the PowerPoint 97/2000 Viewer
A Microsoft article that lists the objects the Viewer 97 exposes
A Microsoft article that lists known issues with Viewer 97 object model and automation
Search terms:viewer,automate,automation,automating,object model
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