Ok, just found out what I was doing wrong. Before you can copy the files from the fs100, you must go to the “Utilities” page (on the firestore unit) and select “Organize P2”. The fs100 will then correctly organize the footage (along with the audio) into the folders compatible with what Premiere cs3 recognizes as a DVCPROHD P2 file (contents, video, audio, voice, proxy…). After this, just copy the “Contents” folder onto your pc hard drive and import it in premiere.