Baptism

Original sin

http://www.catholicaustralia.com.au/page.php?pg=milestones-initiation

Catholic catechism reference: http://www.christusrex.org/www1/CDHN/part2_2.html

http://www.americancatholic.org/features/Sacraments/Baptism.asp

http://www.silk.net/RelEd/baptism.htm