A bad error!

hi friends!
i have a web service in .NET 2003 that contain below error and I cant handle it...
...

Anunhandled exception of type 'System.Web.Services.Protocols.SoapException'occurred in system.web.services.dll

Additionalinformation: System.Web.Services.Protocols.SoapException: Server was unable toprocess request. --> System.Data.SqlClient.SqlException: Login failed foruser 'MICROGOD3\ASPNET'.

atSystem.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception,Boolean breakConnection)

atSystem.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObjectstateObj)

at System.Data.SqlClient.TdsParser.Run(RunBehaviorrunBehavior, SqlCommand cmdHandler, SqlDataReader dataStream,BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)

atSystem.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK)

atSystem.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnectionowningObject, SqlConnectionString connectionOptions, String newPassword,Boolean redirectedUserInstance)

atSystem.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentityidentity, SqlConnectionString connectionOptions, Object providerInfo, StringnewPassword, SqlConnection owningObject, Boolean redirectedUserInstance)

atSystem.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptionsoptions, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnectionowning Connection)

atSystem.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionowning Connection, DbConnectionPool pool, DbConnectionOptions options)

atSystem.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnectionowningObject)

atSystem.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnectionowningObject)

atSystem.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnectionowningObject)

atSystem.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)

atSystem.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnectionouterConnection, DbConnectionFactory connectionFactory)

at System.Data.SqlClient.SqlConnection.Open()

atSystem.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[]datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommandcommand, CommandBehavior behavior)

at System.Data.Common.DbDataAdapter.Fill(DataSetdataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommandcommand, CommandBehavior behavior)

atSystem.Data.Common.DbDataAdapter.Fill(DataSet dataSet)

at LeitnerWebService.Service1.GetData() inc:\inetpub\wwwroot\leitnerwebservice\service1.asmx.cs:line 68

-- End of inner exception stack trace --

PLEASE HELP ME!The Windows user, the web service runs under on the server, user being MICROGOD3\ASPNET based on the error message, does not have permissions to log into the SQL Server you use. It should have a login in SQL Server and the login should be granted permissions to access the database in question.