Like whoa, read this info here first.
You have a 2000 duratec, as do I. Its a bit different for you. Trust me on that one. I did mine at Bobs a few weeks ago.
You will need -
6 new motorcraft platinum spark plugs ($30, dealer ONLY)
one tube anti seize compound
one tube dielectric grease
one new EGR gasket
I would purchase a set of manifold gaskets, they are oval shaped and are sold in packages of 6, they go for about 20 bucks at a dealer ONLY (you should be able to reuse the ones you have, just by cleaning them up a bit, but just in case its good to have them on hand. You can always return them if you dont need them.)
various ratchets
spark plug ratchet
lots of patience
You have coil-on-plug, so no need for spark plug wires
That pic in the manual is for a duratec contour, BTW. Pay no attention to it.
The front 3 spark plugs are very easy to get to, maybe take you 15 mins. You need to remove the coils, which are held on by a screw each. Thats fairly simple. The rears are not fun at all, you need to remove the intake and the air box tube.
To remove the intake, unhook the solenoid on the left side of the intake (wiring harness) as well as the harness on the IAC and a few other sensors on the right side of the intake. Then you can loosen and remove the 8 or so screws holding the intake on. They have grommets around them, for the intake is a composite plastic and its done to prevent damage to the plastic. You need to also undo 2 of the EGR screws to remove it. You need to also remove the plastic tube that connects the airbox to the TB, but you just need to do one end. Its flexible, so you can just flop it back. You can leave the TB and throttle cables intake, they just flop out of the way as well. Basically, the intake is going to lift up on the LEFT side, so you can prop it up out of the way. What I did was lift it so that it rested on the EGR, and the egr held it in place out of my way.
Tip: Make sure you cover the intake ports, as you dont want ANYTHING falling inside when you are doing the rear plug change. Lay a towel or rag across the top and make sure the holes are completely covered.
Tip2: Be EXTRA CAREFUL when doing the rear plugs. They are at very strange angles and its pretty easy to strip the threads.
If you have any questions whatsoever, let me know, im off an on here all day.
-Damon