DESPERATE HOUSEWIVES - "Move On" - Edie organizes a neighborhood search for the missing Mrs. Huber, just as the absent busybody's sister (guest star Harriet Sansom Harris) arrives on Wisteria Lane. Meanwhile, Bree resigns herself to her marital state and asks an attractive pharmacist (Tony Award-winning actor Roger Bart) on a date; Susan's ex, Karl (guest star Richard Burgi), suddenly reappears in her life; Lynette fears that Tom is attracted to the new nanny (guest star Marla Sokoloff); and Gabrielle sinks to new depths - she gets a job -- on "Desperate Housewives," SUNDAY, JANUARY 9 (9:00-10:00 p.m., ET), on the ABC Television Network. (ABC/DANNY FELD) TERI HATCHER, MARCIA CROSS, FELICITY HUFFMAN