Problems Editing with latest Nero 6

I am really new at this stuff, but here is my prob—I can capture my video from the camcorder fine, i can burn it fine my problem is when i go to edit it, I want to cut parts out of the video it will not play back normal the audio is at regular seppd but the picture plays choppy (i hope i am explaining that right). I was told by nero tech support to udate my version- I did that it did not help, i was also told to export the video that too did not work. do i have my settings wrong can any one give me a solution if there is one if not does anyone know of a program that will allow me to view the video in normal play while i am editing. thanks so much