Unlocked Z10 Question

Happy holidays to all!!

We are having a really chilly day here in Florida at 73 degress :D. I just recently unlocked my Z10 and I am thrilled!! The code I received worked! I am getting another option here right after I unlocked it that says, "SIM PIN 2 is set for certain calling features, such as fixed dialing" There is an option to "Change PIN 2" How would I do that? Or do I even need to?

Thanks,
Arlene