Hello to every one

i m getting an error in silverlight 3 application

Error 1 Could not find file 'C:\Users\Iram\Documents\Visual Studio 2008\Projects\VotingPanel\VotingPanel\Bin\Debug\AppManifest.xaml'. C:\Users\Iram\Documents\Visual Studio 2008\Projects\VotingPanel\VotingPanel\Bin\Debug\AppManifest.xaml 1 1 VotingPanel

can any one tell me how to add it again ,b/c it is file which developed at back end .Please reply me if problem is unable to understand