Dinesh Parekh, 9, continues to struggle to find a bicycle license plate with his name on it, the Indian-American child reported Monday. 'This is the third store I've checked today,' said a dejected Parekh, exiting a Toys 'R' Us near his Hayward home. 'Derrick, Diane, Dillon and Dylan, Dirk... no Dinesh.' Parekh, who has pedaled his brand-new Schwinn to more than a dozen stores during his three-week search, said he plans to ask his mother to drive him to the KB Toys in San Leandro next weekend. 