I use PowerDVD a software program that came with both of my DVD drives.
My ATI video card also has a player program, but I like the features of PowerDVD
better. My video card also has a hardware decoder, but I like the effects of the
software encoder better and my CPU is fast enough to do this with minimal
disruptions.
Some retailers appear to sell PowerDVD online for a small charge, less than
$10. Try
www.pricewatch.com If you cannot find it for a reasonable price
you can buy a new DVD-ROM drive for of order $40 including shipping that
includes the software from newegg.com (at least I did so once during the last
year).
There are some free porgrams too, but you might get what you asked for.
www.vcdhelp.com might be a place to look.