How Do You Bond With Your Step Children?

Blended families are becoming more and more common as couples divorce and remarry, with each bringing children from the previous relationship into the family.  Children are not always in agareement with being a partof a new family. What do you do when there is resistance, resentment and reluctance to accept the new parent and siblings? What are ways to bond with the children before the marriage, so that the relationship is not a source of conflict between the husband and wife?