Paging with datapager control for Listbox in Silverlight

Hi,

I created one question paper using listbox in silverlight. now i want to implement paging for it. i am fetching data from database in to listbox. for that i return dataset in websevice and i attach that to listbox. now i took datapager control to implement the paging . but i am not able to implement . can any body help me

Thanks & Regards

P.Nagaraju