There are some links to threads on using GoPro footage in older versions of Premiere (both Elements and Pro), in this article: http://forums.adobe.com/message/3155378#3155378
Take note: the GoPro's have evolved, and pretty greatly. Also, some models allow shooting settings, that will likely not work in PrE 9, without running the footage through CineForm first.
PrE 11 will do better than PrE 9 (depending on the camera and the settings), but you still might need to involve CineForm in the workflow.
Ann Bens had some great info on GoPro footage in a recent thread here, but it was regarding PrE 11.