changing sparkplugs
 

Hello all,
My wife owns a 1999 Windstar, I have 2 questions, what is the easiest way, other than bringing it to a dealer, to replace the sparkplugs, the front 3 look easy enough but the back 3, lol, what a treat. The other question is what way do I turn the nut to remove the EGR valve, not the 2 holding it in place, I am meaning the inch and an eighth, I don't know the name for it, I just dont want to break it and I really need to either clean the EGR valve or replace it. Thank you.