Not sure if this will help, but I know how to get to them on my Zetec model. I'm guessing they should be pretty similar.
On my car, there's a plastic plate that says Zetec. There's also about 8-10 bolts holding it on. When I take that off, there's 4 plug caps. These are a LITTLE hard to get off; I'd suggest doing it when your engine is cool, because you have to twist them a bit to get them off and you don't want to burn the fingers. :p Don't be afraid to pull, and make sure you have a spark plug socket. If your plugs are still in good condition, they should be a tan color. If they've got white or black deposits, that could mean you're running too rich or may have other issues.
Hope this helps!