Transfer movie from mini tape to computer - JVC GR-D770U

I just bought my first digital video camera. A JVC GR-D779U.  It uses the small mini tapes.  There are no instructions on transferring the data from the camera/tapes to my computer.  I assumed it would be simple.  I have no clue how to do this.  I hook up the video camera with the tape in it to my computer via a USB port, turned the camera to "play" and assumed some software would magical appear on my computer to walk be through this.  I am running Windows XP on my computer. Help! I just bought my first digital video camera. A JVC GR-D770U. It uses the small mini tapes. There are no instructions on transferring the data from the camera/tapes to my computer. I assumed it would be simple. I have no clue how to do this. I hook up the video camera with the tape in it to my computer via a USB port, turned the camera to "play" and assumed some software would magical appear on my computer to walk be through this. I am running Windows XP on my computer. Help!