Some brakes have a break area on the pad. Normally after 3-5 days of hitting the brakes it normally goes away.
Like bowhunter said I would clean them really good. If they still squeek after a day or 2 I would talk to the dealer.
If you take the brakes off and see on the pad themselves they have a red surface then they are a brake in pad. Once the color goes away they quit squeeking.