Thanks Mr William for your reply.

In Office 2003 I had put MS- PPT and related videos for corresponding slides in a folder.
It had worked fine.
with auto slide play, corresponding video will play without a hitch and go to next slide.

But in 2007 this not happening.

Plz suggest how to link and correct format for videos to play in 2007 ppt

Best Wishes,
Surinder
India.