Without specifics of your symptoms or pathology, I can give general guidelines. Lower back therapy should be in the direction of core strength, stretching the hips and hamstrings and learning to lift and bend properly to prevent over-stress. Pilates works well for most of this taught by a PT.
For the neck, range-of-motion and strengthening would be what should be considered. See:
Donald Corenman, MD, DC is a highly-regarded spine surgeon, considered an expert in the area of neck and back pain. Trained as both a Medical Doctor and Doctor of Chiropractic, Dr. Corenman earned academic appointments as Clinical Assistant Professor and Assistant Professor of Orthopaedic Surgery at the University of Colorado Health Sciences Center, and his research on spine surgery and rehabilitation has resulted in the publication of multiple peer-reviewed articles and two books.