Can somebody tell me how to replace the window

You might want to take it to a glass shop. You have to take off the inside door panel and find all the screws to do this. Then if it is the drivers door you have to remove any electric switches to remove this panel. Then remove old regulator from motor and put in the new parts. I usually use a piece of wood and a clamp to keep the glass from falling. A glass shop can do it within an hour and you don't have to chase parts.