[blazee]

Is the problem that the shifter won't move out of park or the transmission won't shift out of park? Those are two completely different problems.

If the gear selector moves, but the transmission doesn't respond..... follow the advice given by rlith.

If the gear selector doesn't move from the park postition. Check for a blown fuse, because it's probably a problem with the interlock. If you listen carefully, you should be able to hear an audible "click" in the column when the brake is pressed.