becoming security expert

i have intention to work myself toward becoming a security enginner(consultant) for network,database,or any information technology issue regarding about security.i will be thankful if there is anyone out there who is either doing this or able to provide me with any informations or tips regarding about anycourse,certification,what shall i take note along my career,how much knowledge and real world experience is really enough to consider good.or how shall i really prepare myself in working towardthis goal.

Shawn
mcse mcse+internet