To see if this research treatment is working, CAT scans, MRIs, or bone scans (these are different types of x-rays)will be done. Investigators will also take a bone marrow biopsy (bone marrow will be removed by use of a needle so that it can be looked at under the microscope). These tests will be done prior to treatment and repeated eight weeks later. In addition, if the patient receives the second set of four injections, these tests will be repeated at six months. If the neuroblastoma is not responding (if it has gotten larger), the investigators will offer the patient treatment with chemotherapy and/or radiation therapy.