Everyone seems to be talking about these so-called Mommy Wars -- the battle between stay-at-home moms and working moms. Two books have been written on the subject in the last year, "The Truth About the Mommy Wars"  by Miriam Peskowitz and the new "Mommy Wars: Stay at Home and Career Moms Face off on their Choices, Their Lives, Their Families," by Leslie Morgan Steiner. There was even a two-day special on Good Morning America in March 2006 titled “The Mommy Wars: To Work or Stay at Home.”  What is the source of this conflict?