DESPERATE HOUSEWIVES - "Chromolume #7" - Gaby and Angie head to New York in search of Danny and Ana, on ABC's "Desperate Housewives," SUNDAY, MARCH 14 (9:00-10:01 p.m., ET). While in the Big Apple, a chance encounter with supermodels Heidi Klum and Paulina Porizkova leads Gaby to an unexpected revelation about herself. Meanwhile, Lynette and Tom are in for a big surprise when Preston returns from Europe; Mike is determined to show Susan what a man he is after feeling emasculated; Bree discovers a shocking connection to her new employee, Sam; and Katherine is confused over her feelings for Robin. (ABC/RON TOM) JONATHAN ADAMS, EVA LONGORIA PARKER