These entries will be completed every half hour during the waking day and will be completed for 3 consecutive days following the visits at weeks 4, 8, 20, 32 and 44, and three days prior to the visits at weeks 56 and 60. At entry into the study (week 0) and at weeks 8, 20, 32, 44 and 56, the Unified Parkinson's Disease Rating Scale (UPDRS), Clinician's Global Impression of Change (CGIC) and Clinical Global Impression of Tolerance (CGIT) will be performed.