I am doing a new install of DNN 4.0.9 on my local machine (Windows XP Pro SP2) and using SQL Express 2005 and IIS 5.1.  I using the Source Package for installation but am running VS 2003.  At this time I only want to install DNN and have it running.  I plan on upgrading to VS 2005 so I can modify later.  When I try to test the database connection during the install process I receive the following error:  "Server Error in '/DotNetNuke' Application. The given path's format is not supported.".  I created C:\DotNetNuke\Website\App_Data\DotNetNuke.mdf using SQL Server Management Studio Express.  I setup the ASP.NET account as the Login.  The connection strings in web.config are as follows:

    
    I was able to track down the resolution.  The problem with with my connection string.  I setup my database with SQL authentication and used the following connection strings.

<connectionStrings>
    <!-- Connection String for SQL Server 2005 Express -->
    <add name="SiteSqlServer" connectionString="Data Source=GEORGE-TENAZ\SQLExpress;Initial Catalog=DotNetNuke;User ID=dnn_user;Password=123" providerName="System.Data.SqlClient" />
    
  <appSettings>
    <!-- Connection String for SQL Server 2005 Express - kept for backwards compatability - legacy modules   -->
    <add key="SiteSqlServer" value="Data Source=GEORGE-TENAZ\SQLExpress;Initial Catalog=DotNetNuke;User ID=dnn_user;Password=123" />

Any help would be greatly appreciated.

Thanks

George