U.S. News & World Report - More than four years after real estate values peaked, the historic plunge in home prices remains fresh in the minds of mortgage lenders. After taking painful losses on delinquent home loans, banks have imposed tougher standards--such as increased credit scores and higher down payment requirements--on applicants of all stripes. And as investors fled for the hills, the exotic mortgage products that helped fuel the real estate boom have largely disappeared from the private market. But that doesn't mean all buyers need a big pile of cash to snag a home loan. ...