Fiat Punto '07.........................?

How the hell do you change a brake light bulb on a 07 plate Fiat punto.I've tried unscrewing the two screws holding the light casing on, but the damned thing wont budge. What am I doing wrong? I don't want to take it to a dealership 'cos they'll rob me blind.ThanksFiat Punto %26039;07.........................?
i think there are 3 holding screwsFiat Punto %26039;07.........................?
lawl fiat



Fix it again tony =}

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