There are many ways to find your IMEI on your BlackBerry device, however the most accurate method is the one listed below. This method will work for all BlackBerry handsets with GSM capabilities including the Verizon BlackBerry Storm.
To find your IMEI power up the handset and from the menu select 'Options'. Once you have opened the 'Options' menu, scroll down and select 'Status'. Listed on the status menu you will find your IMEI number displayed.
If this method does not work, exit out of this menu and return to the main screen. Dial *#06# and a box should appear showing the IMEI number.
If nothing is displayed after typing *#06# please remove the battery and check your handset has a SIM card slot. If it doesn't, your phone can not be unlocked. If it does have a SIM card slot and you are having difficulties locating the IMEI number please contact support.