Every Liteon drive i've bought included winDVD or some player software that must be installed to play DVD's. If yours didn't, I'd return it to Walmart and get a refund. Newegg.com. You don't have to "pay" MS anything for codecs, they are available free. Most video cards come with DVD software as well. www.dvdhelp.com is a good guide to sorting out what you need.