Yep, odds are you will need a new control board. After you get that in and programmed, you will need to test each and every device on the system to make sure the voltage stopped at the panel. If it got into the circuit wiring, you may find welded shut contacts..
Usually, lightning voltage comes into the system thru the phone lines, contrary to what most people think. If this is a non-monitored system, make sure you do not have the phones connected to the new panel.
You can use the Vista 15P or 20P as a direct replacement with the current panel, both of which are available here at the store.