if they are home made movies, you can buy a vcr to dvd converter at walmart.
or if there copyrighted vcr movies you buy at the store, you'll have to buy a video capture device for your computer. you can buy one here for $11.59 http://www.dealextreme.com/details.dx/sku.11267
and if you buy a dvd burner, you can burn your video files on to a dvd that you can watch on your tv.