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Juan,

This whole 3D issue can be confusing.

Let's start at the beginning. First you need 3D content, which means in this case, movies or games that were specifically made for 3D viewing.

Next, you need a playback device that sends the proper 3D signal information to a 3D capable TV like this Mitsubishi. Since right now, there are no DVD players that can send a 3D signal, you need to play the 3D content from a PC (usually from its internal DVD player).

The process still won't work unless your computer has a video card that can handle the 3D information. If you have the right card, then you send its output to the TV. (Which again, needs to be 3D capable. Not all TVs are 3D capable, most are not.)

A TV like this Mitsubishi will display the 3D content on its screen. If you are not wearing the proper 3D glasses, the images will look funky.

On the back of the Mitsubishi is an output to the 3D emitter that comes with the 3D shutter glasses. This signal simply tells the glasses when to click on and off, which makes the image on the TV look 3D.

I hope that helps. Let me know if you have any more questions.