1997 Dodge Avenger 6 cyl Two Wheel Drive Automatic 100000 miles

I lost power steering suddenly and car won't keep a charge now.
( battery is strong). car was squeeking before this happened. think it's the alt/ps belt or could be the a/c belt not sure, please advise. need instructions on how to install a new one of these belts on a 1997 dodge avenger (6 cyl). I am a woman!! not afraid to fix my car! a little instruction would't hurt!
Thank You

Unfortunatly my software doesnt have any pics of the tensioner for your car, but there is a wheel with alocking nut in th ecenter, loosen the lock nut and locate the tensioning bolt, this when turned willl move the wheel up and down. Install new belt and tension it fairly tight, but a belt tension gauge is the best way to tell when it is tight enough.Instead of buying a tension gauge, install the belt and tension it until it doesnt make any noise with a/c on or when turning the wheel or starting the car.Here is a pic of the belt routing for you engine