alright i have been searching with google for days now tried yahoo answers found a thread on here thats close but still didnt answer my question.

alright the problem im having is with adobe premiere cs3 the raw files are nice and fluid but once i import them there choppy and i mean really choppy at first i thought it was just because i was editing it but then when i exported it it was still choppy the computer is an older hp with 2 gigs of ram and a dual core processor according to everything ive found that is enough to do the job is there some setting im missing? or something i can do to change this?