Norteltek123 : I too have worked in very secure locations and compounds, with armed gaurds etc, some even complete with their own mine fields, so don't even consider that you are the only one who's "been there"!
The statement by RickyPone is actually quite legitimate, there are people out there who use caller ID to screen their calls and not do the job they have been given and are being paid to do. You do have a legitimate reason for wanting Caller ID, all you had to do was say that, there was no reason to come down on someone who may have the answer to your next question, but now will likely never help you out again.