Hi everybody,

I am completely new to DNN and just trying to install it. I have set up a database on SQL Server 2005 (not sure if I have done it correctly), and created my site in IIS. When I try to run the installation, first of all I get a message that says Auto Install cannot be run because the DotNetNuke Application cannot connect to a valid SQL Server database. When I try to run a "Typical" install, I can't get the connection to work. I have tried various names for "Server" and come up with one of two errors, this one:

Connection Error(s):
Index #: 0
Source: .Net SqlClient Data Provider
Class: 14
Number: 15383
Message:


or this one:

System.ArgumentException: Invalid value for key 'attachdbfilename'. at System.Data.SqlClient.SqlConnectionString.VerifyLocalHostAndFixup(String& host, Boolean enforceLocalHost, Boolean fixup) at System.Data.SqlClient.SqlConnectionString..ctor(String connectionString) at System.Data.SqlClient.SqlConnectionFactory.CreateConnectionOptions(String connectionString, DbConnectionOptions previous) at System.Data.ProviderBase.DbConnectionFactory.GetConnectionPoolGroup(String connectionString, DbConnectionPoolGroupOptions poolOptions, DbConnectionOptions& userConnectionOptions) at System.Data.SqlClient.SqlConnection.ConnectionString_Set(String value) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(String connectionString, CommandType commandType, String commandText, SqlParameter[] commandParameters) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(String connectionString, CommandType commandType, String commandText) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(String connectionString, String spName, Object[] parameterValues) at DotNetNuke.Data.SqlDataProvider.TestDatabaseConnection(DbConnectionStringBuilder builder, String Owner, String Qualifier) at DotNetNuke.Services.Install.InstallWizard.TestDatabaseConnection() at DotNetNuke.Services.Install.InstallWizard.wizInstall_NextButtonClick(Object sender, WizardNavigationEventArgs e) at System.Web.UI.WebControls.Wizard.OnBubbleEvent(Object source, EventArgs e) at System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

obviously I am clueless, any help would be greatly appreciated.
Thanks,
Sarah