How do you replace the main serpentine belt on a 1999 V6 Ford Contour?

To get to the tension pulley, you have to take off the passenger side front tire as well as two small inner black fender wells. Without doing this you won't be able to change the belt. Also what is needed to turn the tension pulley is a 3/8 inch bar breaker. I couldn't get a rachet in the square because of the fender. After that its nothing more than putting the belt on the pulleys.

You are correct on the above, however there is a diagram that shows you how to put the belt back on the pulley. In my 1999 Ford Contour, once you open the hood, in the far upper left hand corner on the shock cover, BEHOLD there's the diagram that shows you how the belt goes back on!