Error message from MSSQL 6.5

Hi,

I'm using D3 with MSSQL 6.5

I'm showing the error message returned from SQL Server on the
OnUpdateError event of my TStoredProc, below:

    procedure Tdm.tVerbaUpdateError(DataSet: TDataSet; E:
EDatabaseError;
      UpdateKind: TUpdateKind; var UpdateAction: TUpdateAction);
    begin
      case MessageDlg(E.Message,mtError,[mbAbort,mbRetry],0) of
         mrAbort: begin
                    UpdateAction := uaAbort;
                    DataSet.Edit;
                  end;
         mrRetry: UpdateAction := uaRetry;
      end;
    end;

How can I show only the especific error returned from the Server,
excluding those
    General Sql Error
    [Microsoft][ODBC SQL Server Driver][SQL Server]
    blah blah...

Thanks

Roberto Guardiola
Funda??o Banco do Brasil
Brasilia (DF) Brasil.