call verizon and tell them you want to unlock the sim, if your account is in good standing then they will provide you the code you need and walk you through entering it in the correct spot.

if you are not in good standing then they wont give you the secret code to unlock the sim.

the 6 zero code is the MSL code that verizon uses. (I think master service lock)- having that will allow you to fiddle with the cdma settings from the service mode. But to unlock the sim you need another code that is specific to each device/sim card I beleive and gets entered someplace else.

there's a new menu item in the phone options screen where you go but again the verizon folks will walk you right through it without any problems as long as your account is in good standing.