I just cleared the virtual directory, and database, and it seems (at the moment) that it's working.  I am getting odd errors with the repository, when I try to upload files though.

Here's a snippet from my web.config settings... if someone could verify them for me that'd be great. 

<connectionStrings>
    <!-- Connection String for SQL Server 2005 Express -->
    <add name="SiteSqlServer" connectionString="Data Source=.\SQLExpress;AttachDbFilename=|DataDirectory|Database.mdf;Integrated Security=True;User Instance=True" providerName="System.Data.SqlClient" />
    <!-- Connection String for SQL Server 2000/2005
    <add
      name="SiteSqlServer"
      connectionString="Server=(local);Database=DotNetNuke;uid=dotnetnuke;pwd=fender1f;"
      providerName="System.Data.SqlClient" />
   -->
  </connectionStrings>
  <appSettings>
    <!-- Connection String for SQL Server 2005 Express - kept for backwards compatability - legacy modules   -->
    <add key="SiteSqlServer" value="Data Source=.\SQLExpress;AttachDbFilename=|DataDirectory|Database.mdf;Integrated Security=True;User Instance=True" />
    <!-- Connection String for SQL Server 2000/2005 - kept for backwards compatability - legacy modules
    <add key="SiteSqlServer" value="Server=(local);Database=DotNetNuke;uid=dotnetnuke;pwd=fender1f;"/>
    -->
..................

My setup is SBS2003, with SQL Express 2005.  I did have some things that relied on MSDE before I upgraded to SQL Express 2005 (SBS Monitoring and Reporting, as well as my Symantec Backup Exec).  

When I run "net start" to check my services I see the following SQL related lines :
MSSQL$BKUPEXEC
MSSQL$SBSMONITORING
MSSQL$SHAREPOINT
SQL Server (SQLEXPRESS)
SQL SERVER 2005 EMBEDDED EDITION (MICROSOFT##SSEE)
SQL SERVER BROWSER
SQL SERVER VSS WRITER
SQLAgent$SBSMONITORING

I'm going to be using DNN for a company intranet, and I need to deploy it soon.  I'm still in the test phases.  Is it possible that these other SQL instances are causing the problem?  Any suggestions are appreciated.