Network providers lock handsets to their networks in order to protect the investment they made as you have received the handset at a reduced price. Therefore the only people that are able to unlock the handset from the network are the network providers.
If you need a restriction code you will need to contact your network provider, these are the people who hold this information. They should be able to give you this information.
Nokia is not able to provide unlocking codes, so asking for these codes here does not help you.
Message Edited by vandelay on 09-Oct-2007 12:03 PM