I've got a problem running dotnetnuke for the first time, after installing dotnetnuke i got this screen:

__________________________________________________________________________

Installing DotNetNuke:
Version: 03.01.00
Current Settings
Default Provider SqlDataProvider
Connection String Server=(local);Database=dotnetnuke;uid="username";pwd=****;
.NET Framework Version   2.0.50215.312
Windows User "pc-name"\ASPNET
Host Name "pc-name"

Installation Status Report
00:00:14.130 - Installing Version: 3.1.0
00:00:14.170 - Installing Script: DotNetNuke.SetUp.SqlDataProvider
00:00:16.283 - Installing Script: DotNetNuke.Schema.SqlDataProvider
00:00:40.358 - Installing Script: DotNetNuke.Data.SqlDataProvider
00:00:50.272 - Installing MemberRole Provider:
00:00:50.272 - Executing InstallCommon.sql
00:00:54.898 - Executing InstallMembership.sql
00:00:56.701 - Executing InstallProfile.sql
00:00:57.072 - Executing InstallRoles.sql
00:00:58.984 - Performing General Upgrades
00:01:00.707 - Loading Host Settings:
00:01:00.917 - Configuring SuperUser:
00:01:03.911 - Installing Desktop Modules:
00:01:03.921 - Installing Optional Resources:
00:01:04.152 -   Installing Module File C:\DotNetNuke\Install\Module\Announcements_3.1_Install.zip:
00:01:08.768 -   Installing Module File C:\DotNetNuke\Install\Module\Contacts_3.1_Install.zip:
00:01:09.850 -   Installing Module File C:\DotNetNuke\Install\Module\Discussions_3.1_Install.zip:
00:01:10.982 -   Installing Module File C:\DotNetNuke\Install\Module\Documents_3.1_Install.zip:
00:01:11.643 -   Installing Module File C:\DotNetNuke\Install\Module\Events_3.1_Install.zip:
00:01:12.614 -   Installing Module File C:\DotNetNuke\Install\Module\FAQs_3.1_Install.zip:
00:01:13.515 -   Installing Module File C:\DotNetNuke\Install\Module\Feedback_3.1_Install.zip:
00:01:13.766 -   Installing Module File C:\DotNetNuke\Install\Module\HTML_3.1_Install.zip:
00:01:14.507 -   Installing Module File C:\DotNetNuke\Install\Module\IFrame_3.1_Install.zip:
00:01:14.657 -   Installing Module File C:\DotNetNuke\Install\Module\Image_3.1_Install.zip:
00:01:15.087 -   Installing Module File C:\DotNetNuke\Install\Module\Links_3.1_Install.zip:
00:01:16.209 -   Installing Module File C:\DotNetNuke\Install\Module\NewsFeeds_3.1_Install.zip:
00:01:16.580 -   Installing Module File C:\DotNetNuke\Install\Module\Survey_3.1_Install.zip:
00:01:17.952 -   Installing Module File C:\DotNetNuke\Install\Module\UserDefinedTable_3.1_Install.zip:
00:01:19.414 -   Installing Module File C:\DotNetNuke\Install\Module\UsersOnline_3.1_Install.zip:
00:01:20.005 -   Installing Module File C:\DotNetNuke\Install\Module\XML_3.1_Install.zip:
00:01:20.355 - Executing Additional Scripts:
00:01:20.375 -   Creating Portal: DotNetNuke Default Portal
00:01:33.053 -   Successfully Installed Portal 0:

Installation Complete

Click Here To Access Your Portal
__________________________________________________________________________

This seems fine to me but after i click "Click Here To Access Your Portal" i get the following screen:

__________________________________________________________________________

Server Error in '/dotnetnuke' Application.
--------------------------------------------------------------------------------

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:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. 

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.]
   DotNetNuke.HttpModules.UrlRewriteModule.OnBeginRequest(Object s, EventArgs e) +561
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +92
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +64

--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:2.0.50215.312; ASP.NET Version:2.0.50215.312
__________________________________________________________________________

Maybe someone can tell me what it means and what i am doing wrong?
Thanks for any help you can give...

You are running DNN in .Net 2.0 which is not compatible. Go to IIS, right click the virtual directory you installed DNN under and click Properties. Click the ASP.NET tab and choose 1.1 from the  drop down menu. This will ensure that the DNN application runs on 1.1. If you don't have .Net 1.1 then you will need to install it.

NBC You were right. It was stupid of me to think dnn would work with .net v2.0 beto so now i tried the following to solve it. But now I ran into problems again.

Now i uninstalled .Net v2.0 beta and installed .Net v1.1.
Dropped the database
Created a new database (with the same name as the first one)
Delete virtual directory'dotnetnuke' in iis
Delete c:\dotnetnuke
Unzipped DotNetNuke_3.1.0_Install.zip to c:\dotnetnuke
Created a new virtual directory in iis named 'dotnetnuke' and adjusted the permissions
adjusted the web.config
ran the installationprocess again with http://localhost/dotnetnuke which resulted in the folowing screen:

_____________________________________________________________________________________________

Installing DotNetNuke
Version: 03.01.00
Current Settings
Default Provider SqlDataProvider
Connection String Server=(local);Database=dotnetnuke;uid=rdvdnn;pwd=****;
.NET Framework Version   1.1.4322.2032
Windows User 'pc-name'\ASPNET
Host Name 'pc-name'

Installation Status Report
00:00:05.387 - Installing Version: 3.1.0
00:00:05.397 - Installing Script: DotNetNuke.SetUp.SqlDataProvider
00:00:05.608 - Installing Script: DotNetNuke.Schema.SqlDataProvider
00:00:13.168 - Installing Script: DotNetNuke.Data.SqlDataProvider
00:00:19.137 - Installing MemberRole Provider:
00:00:19.147 - Executing InstallCommon.sql
00:00:23.093 - Executing InstallMembership.sql
00:00:24.805 - Executing InstallProfile.sql
00:00:25.186 - Executing InstallRoles.sql
00:00:27.289 - Performing General Upgrades
00:00:28.901 - Loading Host Settings:
00:00:29.071 - Configuring SuperUser:
00:00:30.634 - Installing Desktop Modules:
00:00:30.634 - Installing Optional Resources:
00:00:30.814 -   Installing Module File C:\DotNetNuke\Install\Module\Announcements_3.1_Install.zip:
00:00:32.987 -   Installing Module File C:\DotNetNuke\Install\Module\Contacts_3.1_Install.zip:
00:00:33.688 -   Installing Module File C:\DotNetNuke\Install\Module\Discussions_3.1_Install.zip:
00:00:34.399 -   Installing Module File C:\DotNetNuke\Install\Module\Documents_3.1_Install.zip:
00:00:34.820 -   Installing Module File C:\DotNetNuke\Install\Module\Events_3.1_Install.zip:
00:00:35.501 -   Installing Module File C:\DotNetNuke\Install\Module\FAQs_3.1_Install.zip:
00:00:36.001 -   Installing Module File C:\DotNetNuke\Install\Module\Feedback_3.1_Install.zip:
00:00:36.161 -   Installing Module File C:\DotNetNuke\Install\Module\HTML_3.1_Install.zip:
00:00:36.472 -   Installing Module File C:\DotNetNuke\Install\Module\IFrame_3.1_Install.zip:
00:00:36.622 -   Installing Module File C:\DotNetNuke\Install\Module\Image_3.1_Install.zip:
00:00:36.893 -   Installing Module File C:\DotNetNuke\Install\Module\Links_3.1_Install.zip:
00:00:37.493 -   Installing Module File C:\DotNetNuke\Install\Module\NewsFeeds_3.1_Install.zip:
00:00:37.744 -   Installing Module File C:\DotNetNuke\Install\Module\Survey_3.1_Install.zip:
00:00:38.665 -   Installing Module File C:\DotNetNuke\Install\Module\UserDefinedTable_3.1_Install.zip:
00:00:39.426 -   Installing Module File C:\DotNetNuke\Install\Module\UsersOnline_3.1_Install.zip:
00:00:40.017 -   Installing Module File C:\DotNetNuke\Install\Module\XML_3.1_Install.zip:
00:00:40.167 - Executing Additional Scripts:
00:00:40.177 -   Creating Portal: DotNetNuke Default Portal
00:00:52.355 -   Successfully Installed Portal 0:

Installation Complete

Click Here To Access Your Portal
________________________________________________________________________________________

Now when i click to access the portal dnn starts but with errors like this:

An error has occurred. Error: Welcome to DotNetNuke... is currently unavailable.

btw im running dnn windows 2000 with mssqlserver and i couldnot find the 'ASP.net-tab' in the propertys of my virtual directory maybe i have the wrong version of iis to

I hope someone of you can help me...