Mercedes Benz repair: Ignition wont catch, c280, automotive repair

Question
I have a 1996 C280.  The problem is that when I turn the ignition the engine will turn over but it won't catch.  

Answer
Answer:
The following links should have all the data you need.

No-start help for beginners
http://www.mercedesshop.com/shopforum/showthread.php?p=1076969

Automotive repair training book on line, you can download it.
http://www.tpub.com/content/construction/14273/