I'm not totally sure if I understand DVI...here's what I think it is.

Your DVD player would convert the digital data from the disc to 720p then it would send that digital signal to your digital tv. The signal would never undergo a digital to analog conversion. Where as most DVD players would need to take the digital data from the disc, convert it to analog, and send it via your component video cables to your TV. You know what...as I'm trying to explain how I understand it, I'm realizing I don't understand it. Anyone care to give me a bare bones "Digital Video for Dummies" explaination of 480p 480i 720p 1080i and 1080p? DVI vs Component?