title: Web Platform installer and sql express database setup
body: <p>I tried to install Amplifeeder today with the Web Platform Installer.</p>
  
  <p>When I arrived at the database setup I had to fill out some informations like "db admin user/password" and user username/password.</p>
  
  <p>Using SQL Express I do not have any username/password (neither admin or user). How should I be able to install applications with the WPI and SQL Express 2008 ?</p>
  
  <p>Basically I had this error while trying to install in the logs : </p>
  
  <pre><code>DownloadManager Error: 0 : MS Deploy exception: Microsoft.Web.Deployment.DeploymentClientServerException: The database 'AmpliFeederDB' could not be created. ---&gt; System.Data.SqlClient.SqlException: Login failed for user 'sa'. The user is not associated with a trusted SQL Server connection.
  </code></pre>