.vob files how do I make them play?

[jiggaj]

I can't seem to make any vob files play in my dvd player, whats the secret?

[jiggaj]

I guess I'm an idiot but when I copy one of my dvds to the hard drive it has .vob and .ifo files and I put that on another dvd it doesn't play in my dvd player but plays on my computer.