• Type 2 diabetes mellitus patients from selected general practices• Between 35 and 75 years• HbA1c ≥ 7.0% in combination with maximal oral hypoglycaemic agents(i.e. the combination of two oral medicines, what cannot further be increased)• Used to a computer and used to the internet• Ability and willingness to inject insulin• Ability and willingness to perform self monitoring of blood glucose• Written informed consent• Understanding of Dutch language. Here, INS is linked to type 2 diabetes mellitus.