Import vob to imovie for editing is not as diffcult as you think now. Many mac users happened that could't import vob to imovie directly by themseves. The reason that can't import vob to imovie is imove just support mp4, mpeg2, dv, move but not vob.
VOB stands for DVD Video Object. It is basically one of the core files found on DVD-Video discs and contains the actual movie data. Basically VOB file is just a basic MPEG-2 system stream -- meaning that it is a file that contains multiplexed MPEG-2 video stream, audio streams (normally AC3 and DTS formats) and subtitle streams.
If you want to import vob to imovie the first thing you should do is to convert vob to imovie support format files like mp4, then import vob to imovie. So you need the VOB to iMovie Converter to help you to convert/import vob to imovie '08/'09 right now.
With the best vob to imovie converter, just some simple steps you will convert vob to imovie mp4, then import vob to imovie and edit with imovie. The imovie import vob converter also can convert other popular format videos to imovie like MPEG, WMV, H.264/AVC, MKV, RM, MOV, XviD, 3GP, so perfect!