Michael, your post has pointed me in the right direction. I´ve also been reading this: http://www.reduser.net/forum/showthread.php?t=33118.
I know...that´s only for "normal" 2k movies. I am grateful for the details on the insights of the process.
So, following this thread, in order to produce the "interlaced" effect, the let-right-left eye sequence with the appropriate frame-rate etc.. I should try out one of the software they talk about in the above link.
And as for the animation and the story telling, thanks. I´ve been waiting this moment for 6 months now. So that´s all already been taken care of (zero parallax, twisting camera shots, color grading, etc.. to help the emotions of short animated movie).
I know there may be a gazillion technical details. And I know that´s an area that´s better left for the guys at the facilities which do this kind of conversions all the time (digital assets to DCI)....for example (authoring a real 5.1 channel for Dolby surround system..etc..)..and that they can better guarantee results on the big screen...
Yet all this help by you and other people that has posted around the threads I´ve look and commented, it´s refreshing to the spirit of the indie path making it´s way to the big screen. What better is it, if the animator knows this in advance? -A whole lot.