Problem in " NT AUTHORITY\NETWORK SERVICE "

I just install a sql2k and csk
After all installation , This message occurs when I start the csk
What is 'NT AUTHORITY\NETWORK SERVICE' ?
How can I solve this problem please?

'/CommunityStarterKit' ?????
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? 'NT AUTHORITY\NETWORK SERVICE' ??
??: ??? Web ????????????,?????

??: System.Data.SqlClient.SqlException: ? 'NT AUTHORITY\NETWORK SERVICE' ??

??:

??? Web ??,??????????,??????

??:

[SqlException: ? 'NT AUTHORITY\NETWORK SERVICE' ??]
System.Data.SqlClient.ConnectionPool.GetConnection(Boolean& isInTransaction) +472
System.Data.SqlClient.SqlConnectionPoolManager.GetPooledConnection(SqlConnectionString options, Boolean& isInTransaction) +372
System.Data.SqlClient.SqlConnection.Open() +384
System.Data.Common.DbDataAdapter.QuietOpen(IDbConnection connection, ConnectionState& originalState) +44
System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +304
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +77
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet) +38
ASPNET.StarterKit.Communities.CommunityUtility.GetAllCommunitiesFromDB() +92
ASPNET.StarterKit.Communities.CommunityUtility.GetAllCommunities() +56
ASPNET.StarterKit.Communities.CommunityUtility.GetCommunityInfo() +332
ASPNET.StarterKit.Communities.CommunitiesModule.Application_BeginRequest(Object source, EventArgs e) +204
System.Web.SyncEventExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() +60
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +87

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??: Microsoft .NET Framework ??:1.1.4322.573; ASP.NET ??:1.1.4322.573see thread "Connecting to MSDE using SSPI". Looks like you have hit the same problem as I did.

John B