Plagued with a surplus, St. Joseph Orphanage director Ann Rath has been pushing Asian orphans to prospective adoptive parents. 'This is Mi Lingisn't she pretty?' said Rath, introducing Bonnie and Paul Fisher to one of the 40-bed orphanage's 27 Asian children. 'Or, if you'd prefer a boy, we have Tan Dinh. He's crazy about baseball.' The Fishers, who were hoping for a Russian girl, told Rath they would 'think it over'the fifth time a couple has done so in the past week. 