I have transferred/sync the contacts from the Nokia to the iPhone using Nokia PC suite. They are saved in outlook express windows contacts. I have read some articles about creating a new user account but am unable to do this because it is a work computer and a lot of things are locked on it such as download new software etc. I do have iTunes on the computer though.
I also have my own personal MacBook Pro laptop but am not sure how to transfer the Nokia contacts to it as I have read that the new operating systems no longer have iSync.
If you want iTunes to recognize the new iPhone as a new iPhone, you need to create a new iTunes library for that new iPhone. Close iTunes. Then hold shift+alt and double click iTunes to program. It'll prompt you to choose a library. Click "Create Library" to create a new library for the new iPhone. After you've finished syncing contacts, close iTunes and do the same procedure but this time choosing your library.