Can we add multiple xaml page refference in .xap file in silverlight 5

Question

I create a silver light 5 application with MVC3 web application.I want to add multiple .xaml pages in silverlight project and add those pages references in .xap file in clientbin folder of MVC3 web project. I created a page named "secondpage.xaml" in silverlight 5 project. But .Xap file does not know the second page.xaml. It only know about mainpage.xaml.
Kindly tell me how i added secondpage.xaml's reference in .xap file in clientbin folder.