WebDav Word document after NetworkCredential Authenticated

Question

I have a word document file I like to load in the browser after the NetworkCredential is called. >NetworkCredential credential = new NetworkCredential(username,password); Once the credential is validated, I like to load the Word document with either Response.Redirect or Server.Transfer. However, these two methods keeps giving me the NT Challenge dialog box which I don't want. Is there a way to access a non-ASPX file ? Does anyone know?