I'm not going to sugar-coat this at all, it's not easy to pull off and it can be very labor and computer processing intensive(everything is doubled). Couple of links that go explain it in much greater detail.
http://kb2.adobe.com/cps/898/cpsid_89868.html
Adobe TV:
http://tv.adobe.com/watch/adobe-evangelists-karl-soule/stereoscopic-3d-work...
Adobe TV - Chris Meyer tutorial series:
http://tv.adobe.com/show/stereoscopic-3d/
Johnny Cuevas, Editor
Thinkck.com
"I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work."
---THOMAS EDISON on inventing the light bulb.