Not diet related...BUT. Help! Computer/DVD/Slideshow

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I need someone who is pretty smart with computers or can help me : )

For my parents 25th Wedding anniversary I am making my mom a secret DVD slideshow of the past 25 years. My dad got their wedding tape converted from VHS to DVD but I cannot for the life of me figure out how to get it from DVD to files to put on Windows Movie Maker.

If you know anything about this please message me and help me!

Thanks! :smile: