How many miles on the car, I bet quite a few, considering the year. Yes it is not uncommon to have brakes squeel when new pads are put on, but if they squeel even when not braking it could be the pad retainers are improperly installed, and you should have them looked at to make sure, if only for your peace of mind. But take them to an independent place not a chain store. And count your blessings they didnt pump air into the master cylinder.