How do I replace the serpentine belt on a '97 Ford Contour?

I have a '97 Ford Contour 4 cyl 2.0 with Air Conditioning. My Serpentine belt looks a little rusty and shows signs of wear, and sometimes I am hearing a squeaky noise, so i'm guessing most likely it's the serpentine belt. Is this something that isn't too difficult that I could do on my own or do I bring it in to a mechanic?How do I replace the serpentine belt on a '97 Ford Contour?Basically loosen the tensioner(spring loaded) Remove the old belt and install the new one. Draw a picture if you can't remember how it routes.And check the pulleys while the belt is off.Spin them by hand . Listen and or feel for worn bearings and pulleys.Good luck.