The title says it, here is the how to with pics for removing and replacing the intake manifold and getting to those annoying coils and spark plugs by your self. I don't think is very hard to do, only disclaimer is that you need to be really careful not to drop nothing inside your engine.

Link: jaghelp.com: Removing and installing the intake manifold on your Jaguar 2002 X-type

Comments and criticisms are welcome if you feel I missed something.