Why can't the sample "101 Visual Basic and C# Code Samples" work on remoting web site?

Question

I have done the sample code "Security" in the package "101 Visual Basic and C# Code Samples" (http://www.microsoft.com/downloads/details.aspx?FamilyId=08E3D5F8-033D-420B-A3B1-3074505C03F3&displaylang=en). The sample "Security" can work well in local IIS, but when I upload to Free ASP.NET 2.0 Beta 2 Hosting (https://www.hostmysite.com/aspnet/) ,the sample "Security" cannot work , why? I think maybe there are some problem with SQL 2005 Express database.


The following is content in web.config


 <connectionStrings>
  <add name="App_DataConnectionString" connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\ASPNETDB.MDF;Integrated Security=True;User Instance=True"
   providerName="System.Data.SqlClient" />
 </connectionStrings>





The error info when I try to login into system.

The page cannot be found

The page you are looking for might have been removed, had its name changed, or is temporarily unavailable.

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Please try the following:

• Make sure that the Web site address displayed in the address bar of your browser is spelled and formatted correctly.
• If you reached this page by clicking a link, contact the Web site administrator to alert them that the link is incorrectly formatted.
• Click the Back button to try another link.

HTTP Error 404 - File or directory not found.
Internet Information Services (IIS)

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Technical Information (for support personnel)

• Go to Microsoft Product Support Services and perform a title search for the words HTTP and 404.
• Open IIS Help, which is accessible in IIS Manager (inetmgr), and search for topics titled Web Site Setup, Common Administrative Tasks, and About Custom Error Messages.