How can set the SIM lock pin?

1. From the home screen press the Menu button.
2. Move the cursor to Settings and press the OK button.
3. Move the cursor to Security and press the OK button.
4. Move the cursor to Modify PIN2 and press the Select button.
5. Enter the current PIN, then press the OK button.
6. Enter the new PIN, then press the OK button.
7. Re-enter the new PIN, then press the OK button.