Removing the radio from my 01 Millenia S
 

I always thought, but never looked to be sure, that there were two holes on each side of the radio, similar to the Ford radios that needed the tool to remove the factory radio. Now, I've finally looked and this doesnt seem to be the case. It has the Bose 9 speaker factory system, and I just need to know how to remove the head unit without breaking anything. ALSO, will the radio need a security code if I reinstall it down the road?