New York Sen. Hillary Rodham Clinton, trying to warm up an image some voters perceive as cold, starts a drive Monday to showcase her personal side with testimonials from friends, associates and constituents she has helped. The online and in-person campaign, complete with a website called TheHillaryIKnow.com, comes a day after Clinton won a key endorsement from The Des Moines Register and her chief rival in the Democratic nomination race, Illinois Sen. Barack Obama, was endorsed by The Boston Globe.The rush of endorsements comes as candidates angle for advantage in Iowa's Jan. 3 caucuses and New Hampshire's Jan. 8 primary. Weighing in on Iowa's tight three-way Democratic battle for first place, the Register called Clinton "best prepared to confront the enormous challenges the nation faces."