To make a full use Nokia services, you must create an account. This account will allow you to access the Nokia online App store (http://store.ovi.com/) , extra services, applications, change the settings and finally your identity is recorded.
You can create an account either using your computer or your phone.
Create an account on Nokia from your phone
When you first open the Nokia Ovi Store App, you will be asked to create an account. Accept and follow the instructions.