Two women are watching each other.Phoebe Miller isn't sure when the rusty car started showing up in the cul-de-sac she calls home, or why its driver would be spying on her. What could be interesting about an unhappy housewife who drowns her sorrows in ice cream and wine and barely leaves her house?Only one knows why.When a new family moves in across the street--the exuberant Vicki, who just might become the gossipy best friend Phoebe's always wanted, and her handsome college-