You can convert PowerPoint presentations into MPEG2 Files to play them on the DVM7400.
This can be done using a third party software package found here :http://www.presentersoft.com/download.htm
They have 2 programs, one for PowerPoint 2000 and one for PowerPoint 2002/2003. Use the following settings to build an MPEG file that is compatible with the DVM-7400:
Video Resolution = 720x480
Expected Framerate = 30 (Frames per second)
Preferred video format = MPEG
Video: MPEG2 @ 8000kbps, 29.97fps, original frame size, Audio: 224kbps