I second everything Glock Fan said.
Here in Texas we are still required to notify if we are carrying when stopped. Through a strange twist in a new law that allows concealed guns in autos without a permit those without permits are NOT required to notify the officer. Figure that one out.
However, I would add that it is a good idea to let the officer know you have a permit because they are often a little more at ease when they realize they are dealing with someone who has a clean record.
Avidshooter (Texas)
"The real destroyer of the liberties of the people is he who spreads among them bounties, donations and benefits." -- Plutarch