I need a rectifier with a zener diode with Vdc=12V, Ir2=100mA and a ripple voltage, Vr(of R2)<=.3v. The primary voltage is 120V with 60hz frequency. I need to know the values that could be used for the capacitor, resistances, voltages and currents.

 

This falls into the class of projects that are too inherently dangerous to discuss. Always use a transformer to provide galvanic isolation and a lower voltage. In this case, an inexpensive wall transformer would work very well.