I found changing the filter and fluid very, very easy.
step one, get a new filter and transmission pan seal.
step 2, drain the transmission by removing the drain plug
step 3, remove the fluid pan off the bottom the tranny, i think htere are 6 screws. (mine were really rusted so i ordered new ones)
step 4, remove the old filter, only 1 alen key screw holding it in
step 5, clean off the magnets in the bottom of the pan, install new filter and seal and put the pan back on.
get new fluid and fill it up.
its about as easy as changing the oil, except with a few more screws.