DESPERATE HOUSEWIVES - "I Must Be Dreaming" - Gabrielle revisits her past when old friends come to town, Morty (guest star Bob Newhart) helps Susan out of a jam, and the Scavos learn more about the new neighbors, on "Desperate Housewives," SUNDAY, OCTOBER XXXXX (9:00-10:01 p.m., ET) on the ABC Television Network. (ABC/DANNY FELD) BOB NEWHART, LESLEY ANN WARREN