i have good sky relay! RW-SS-112D but don't know how to connect it!!

does any one know which is which of the pins is the power supply and ground and IC, also NC pin!!

Not sure I understand all your asking for, but here is a datasheet for the relay number you gave. It shows the wiring pinout at the bottom of the document:

http://www.rapidonline.com/netalogue/specs/60-4660e.pdf

Lefty