Z-5500 Setup

I recentley bought a set of Logitech Z-5500 speakers. I want to hook them up through a dvd player, as because i dont have a computer to play them through. What is my best option to make so i can make these babies pound, would my dvd player running through a coax cable peak them or is there something else i can connect them to that will make the sound good? Is digital coax or digital optical better, does digital optical come on a dvd player???
Or are there any other reccomendations that you guyz can make on how i should set them up considering i have no pc to make them sound as good as possible?

Dont matter