I don’t have a dvd rom
I had a hard time getting my InterACT player to work, when it came bundled with a favorite movie I liked. I dl’ed DVDShrink and that actually played things movies nicely. But that’s more of a duplicating software.
I don’t use anything on my pc (only a cd-rom), on my mac I use their DVD Player. It works great.
PowerDVD DVD Shrink ATi DVD Player
InterVideo WinDVD4 Windows Media Player 9 i’ve got some divx player that’ll play’em too.