Patients accepted in the trial are randomly assigned to fluconazole or amphotericin B. Fluconazole is given orally once a day and amphotericin B is given intravenously once a week. Dosages depend on body weight. Medications may be given with amphotericin B to prevent or reduce discomfort from associated side effects. Patients are treated for 12 months and may continue to receive antiviral therapy, radiation therapy for mucocutaneous Kaposi's sarcoma, or preventive therapy for Pneumocystis carinii pneumonia (PCP) during the study.