How to impersonate the user and send those credentials?

I want to create only one user on the domain, and my application should send that user and password to the reportviewer, in that way I wont have to give permissions to every user individually .

Does anyone have the lines of code to do this?

Check the WindowsIdentity class (particularly WindowsIdentity.Impersonate): http://msdn2.microsoft.com/en-us/library/system.security.principal.windowsidentity(VS.80).aspx

-- Robert