Why Is Saturated Fat Important?

Listed under the seven healthy eating habits it mentions splitting your fat intake equally between poly, mono and saturated fats. What is the importance of saturated fat? Thanks.
Amanda

Sorry bout ton pass out here are a couple from a quick search that may help. there are others as well. Be nice If Cassandra would pop in as well. Id search and read the fats round table as well

http://www.T-Nation.com/readArticle.do?id=1485979
http://www.T-Nation.com/readArticle.do?id=644939

Hope that helps
Phill