BusinessWeek Online - It may seem like ancient history now, but not long ago the mortgage industry was turning ordinary people into millionaires. One of them was Sharmen Lane, a high school dropout who, like many other young women during the boom, found her way into an obscure banking job with the clunky title "mortgage wholesaler." Her experience -- and the experiences of other wholesalers like her -- offers a glimpse into the recklessness and indulgence that drove the industry to ruin.