PWM 220v light bulb control using pic16f877

Do anyone have an idea on how to design a light dimming circuit that uses a 220v light bulb and the pic16f877? we are making a project of that kind.. can anyone give me a link or a schematic? i badly need it..

I think there is one at microchip.com under application notes. Not using 16F877 but some 16Fxxx.