Why am I getting black bars in my render?

i'm using premiere cs3 render out video , i'm getting shots looks fine, , others i've got black bars on sides.  have render output , individual elements set render out same, , title safe frame shows fine when play in premiere.  idea what's throwing me off?

1st, cs3 has different forum http://forums.adobe.com/community/premiere/premierepro_previous?view=all

 

2nd, when go forum (or when mod moves message) need provide details of editing... , project settings... , export settings

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