Squeeky pully on 96 2.3 w/o ac

[dragonryder]

I'm picking up a 96 ranger with 191000 miles on the 2.3 4 banger. There is a squeeky pulley (almost sounds like a bird chirping). It is hard to locate do to the fan and all but the seller says that he used wd-40 on the pulley located to the left and down from the power steering pump and it quit for a short while. He said he never looked in to it much because his buddy has the exact same sound and they both have been running fine. Any one know how hard it is to change that pulley or is it even worth it? Thanx