please help me about pmb program

Just import the video. PMB does all the stitching automatically. If you wish to butt edit different clips, then you should use an editing program.

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.

I hear the current PMB software has editing capability built in so you can join a series of short clips together. If yours cannot do that, you can go to the Sony site and download the newest version free. Sony Vegas costs, but it offers many improvements over the basic PMB editing.