If you have a DVD drive you do have a decoder. What media player are you using on your computer? If it is Windows media Player and the computer is less than 5 years old, the DVD should play.
If not just go online into a search engine and just type in 'DVD decoders'. You will find thousands of places to download one.
If not just go online into a search engine and just type in 'DVD decoders'. You will find thousands of places to download one.