我遇到一个问题。求救

我安装了community starter kitsql server  /  系统server 2003出错;“/Community”应用程序中的服务器错误。
--------------------------------------------------------------------------------用户 'NT AUTHORITY\NETWORK SERVICE' 登录失败。 
说明: 执行当前 Web 请求期间，出现未处理的异常。请检查堆栈跟踪信息，以了解有关该错误以及代码中导致错误的出处的详细信息。 异常详细信息: System.Data.SqlClient.SqlException: 用户 'NT AUTHORITY\NETWORK SERVICE' 登录失败。源错误: 
行 128：            dadCommunities.SelectCommand.CommandType = CommandType.StoredProcedure;
行 129：            DataSet dstCommunities = new DataSet();
行 130：            dadCommunities.Fill( dstCommunities );
行 131：            return dstCommunities;  
行 132：        }
 源文件: D:\public\CommunityStarterKit\Engine\Framework\Communities\Components\CommunityUtility.cs    行: 130 堆栈跟踪: 
[SqlException: 用户 'NT AUTHORITY\NETWORK SERVICE' 登录失败。]
   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() in D:\public\CommunityStarterKit\Engine\Framework\Communities\Components\CommunityUtility.cs:130
   ASPNET.StarterKit.Communities.CommunityUtility.GetAllCommunities() in D:\public\CommunityStarterKit\Engine\Framework\Communities\Components\CommunityUtility.cs:111
   ASPNET.StarterKit.Communities.CommunityUtility.GetCommunityInfo() in D:\public\CommunityStarterKit\Engine\Framework\Communities\Components\CommunityUtility.cs:75
   ASPNET.StarterKit.Communities.CommunitiesModule.Application_BeginRequest(Object source, EventArgs e) in D:\public\CommunityStarterKit\Engine\Framework\BaseClasses\CommunitiesModule.cs:64
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() +60
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +87 
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版本信息: Microsoft .NET Framework 版本:1.1.4322.2032; ASP.NET 版本:1.1.4322.2032 原来在2000下，跑得好好的