2000 Pathfinder needs transmission fluid change.....

I have a 2000 Pathfinder LE that is in bad need of an automatic transmission fluid change. I have driven GM's for most of my life and the Nissan was acquired only recently so I'm still getting my bearings. Is this a simple procedure or should I just pay the guy at the oil change place the $70 and save myself the trouble. If anyone could point me toward a how to or just give me a few instructions it would be greatly appreciated.

If you don't know how, pay the $70 and get it done. Trans pans haven't changed much since the 70's. ;)