I am currently trying to write an addin for PowerPoint that whenever any PowerPoint document is opened and then run in show mode that the feature to record narration audio and slide timings is automatically activated. However I cannot seem to find that option in the PowerPoint interop object The manual in application way to use this feature in Powerpoint 2007 is under the "Slide Show" tab of the ribbon called "Record Narration". I have found under that I can set under Microsoft.Office.Interop.PowerPoint.SlideShowSettings.AdvancedSettings to RehearseNewTimings but this does not record narration audio. Does anyone know if this is even possible? Or if I am completely on the wrong track here. Thanks in advance for any repsonse