The study will include two consecutive periods: 2 weeks run in period and 24 weeks intervention period, divided into two separate treatment periods of 12 weeks. According to randomization, each patient will be treated consecutively with both treatment arms: 12 weeks with insulin Glargine and than 12 weeks with NPH insulin or 12 weeks with insulin NPH ad than 12 weeks with insulin Glargine. Patients will complete DTSQ (Diabetes Treatment Satisfaction Questionnaire) at months 0, 12 and 24 weeks, before and at the end of each study arm.