its easy as cake!
or pie,, which ever you like
I'd first pull the negative on the battery.
Then use a 3/8 ratchet or a belt removal tool,
to remove the serpentine belt.
I forget what size the bolts are on the WP pulley,
think 10 mm, remove those.
You will have to hold the pulley still.
By placing a wrench(or something flat)diagonaly between the bolts like this "/.
Then thiers 6-8 bolts holding on the WP.
They too are 10mm I think...
all the bolts should be the same anyway.
Then reverse to install.
Top off coolant let run to get all the air out of the cooling system.
Might help to keep the heater on full blast so no air hides in thier.
Hope that helped.