If your videos on your camcorder is a bunch of short clips, then PMB will simply import the short clips as they were shot. You will need an editing program to edit and "stitch" them into one program. Use Vegas for this.
If you shot a long form non-stop, then the files on the drive will be several to make up one video clip. These files are not clips but you can import that long video using PMB and the files will be stitched automatically using that program. DO NOT use a file transfer to import the video as this will not work properly.