We have a PowerPoint 2003 presentation that links to several FLV video files. I have installed codecs so that FLV files will play within Windows Media Player, which they do outside of PowerPoint. When the presentation is running, however, PowerPoint produces an error message when clicking the hyperlink that links to these video files. The error is "No program is registered to open this file." I have gone into the File association dialog and manually associated Windows Media Player with FLV files. We are using PowerPoint 2003 (SP 3) and Windows Media Player 11 on Windows XP Professional, SP 3.