Currently Being ModeratedJan 27, 2013 12:22 PM (in response to Splcgirl)
There is nothing on your computer by dafault, that will allow you to do this.
You need to seek out a 3rd party software, that is designed to extract data from a previously burnt disk. The slang term for this is called "Ripping".
See this web site - http://www.macxdvd.com/mac-dvd-video-converter-how-to/rip-dvd-free-mac.htm.