This protocol is planned as a multicentric, national, open-label trial designed to evaluate, first, optimal dose of Velcade® (Bortezomib) in combination with melphalan and prednisone. After optimal dose is known, the second aim is evaluate safety and tolerance of V-MP plan, in respond terms, in a cohort of 60 patients. Finally, the entire results will be compared with those obtained from a series of 100 patients, all of them over 70 years old, diagnosed of Multiple Myeloma belonging to the GEM protocol finished in May 2003