There are rollers on the window regulator that attach to a channel made onto the glass. So you have to drill the rivets out on the regulator and get it detached from the inner door panel (huge black cover with 4,000 screws holding it on) them you can slide the regulator side to side and get it off the glass. Then change the motor off the regulator. REMEMBER THE REGULATOR HAS A HUGE SPRING IN IT AND IS UNDER ALOT OF PRESSURE!!! You can put it in a vise or use vice grips to hold it still, but be careful!!! This isn't an easy job but it can be done just be careful use you head and think about what your doing before you do it, and make sure you have an extra hand to hold the window.