I know this has been done before but the pictures for that have been taken out, and I am going to be doing this soon so I thought I would post it for those wanting to know. Here is the link to follow that will give you a basic idea as to thow to change them. Note that there are no tools given so you will have to figure that out, unless someone knows the tool sizes and etc. Hopes this helps
http://www.freeengineinfo.com/car-wont-go-it-shakes.htm
Side Note: Here are a few things I think you need
1) Spark plug socket
2) 13mm socket (cam cover)
3) 8mm for battery terminal
4) Needle nose pliers or vice grips for boots
5) Of course 4 spark plugs
6) A ratchet set with the above mentioned sockets with various extensions.
7) If you have a question as to what these tools are then let a professional handle it.