I installed DNN 4.5; however I receive the following error when I access my web server over the internet.  If I access my DNN site on the local machine it works fine.  I followed the DNN Installation Guide and the one issue I had is that my Windows 2000 Server (Web Server) does not have an ASPNET User account. I am running dot net 2.0. Can anyone offer any guidance?

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

[NullReferenceException: Object reference not set to an instance of an object.]
   DotNetNuke.Entities.Portals.PortalSettings.GetPortalSettings(Int32 TabId, PortalAliasInfo objPortalAliasInfo) +91
   DotNetNuke.Entities.Portals.PortalSettings..ctor(Int32 tabId, PortalAliasInfo objPortalAliasInfo) +83
   DotNetNuke.HttpModules.UrlRewriteModule.OnBeginRequest(Object s, EventArgs e) +2677
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +92
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +64

I entered the external IP address.  I've created a sample hello world ASP Net application and it works fine.  I don't know why my newly installed DNN site produces the error I described previously.  Any thoughts?

I'm not sure what the problem is here. You say you can browse to the site locally, but not from another location. That seems like it has nothing to do with the ASP.NET account (your site would not work at all, and not just locally)

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