How do I find out my Verizon security code?

[starrfyrre]

Did you put the friend's phone on your plan or start up a new plan with Verizon for the phone? If you don't set up voice mail within a certain amount of time, they delete your voice mail account. You are supposed to set the security code yourself when you set up your voice mail.

[Alice]

I got my friend's Verizon Samsung Smooth a couple months ago and until now I haven't needed to check the voice mail, but now I do and when I try and listen to it it asks for a security code. It isn't written anywhere, how can I find it?