 Subjects will be taught CHO counting after which they will be introduced to an insulin pump. They will wear the insulin pump for three weeks to adjust to the pump and its functions. Then the subject will wear a Continuous Glucose Monitoring System to determine rate changes needed to achieve short-term near normal glucose control. The primary endpoint is what are the mean number of changes in the basal infusion rate and what are the mean differences and mean duration of these changes. The secondary endpoint is what mathematical formulas describe the relationship between the dosing factors and do they significantly differ from those previously established by King and Armstrong. 