Edit with Morgan or MainConcept http://www.morgan-multimedia.com/
- and problems with Samsung codec http://forums.adobe.com/thread/699493
According to other messages, PrElements does not work well with MJPEG so you MAY need to convert to AVI
I think I've seen mention of a FAQ article about this... have you gone to the FAQ page from back at the main page for this sub-forum?
Start at http://forums.adobe.com/community/premiere_elements and look on the right side for the FAQ page