How to add a blank row to a dataset

Hi

   I have the following code that will generate a dataset. Could someone advice me on how I could add a blank row to it.

Any help is greatly appreciated.

 Dim conBrokerCompanies As SqlConnection = New SqlConnection(ConfigurationSettings.AppSettings("ConnectionString"))
            Dim cmdBrokerCompanies As SqlCommand = New SqlCommand("GetBrokerCompanies", conBrokerCompanies)
            cmdBrokerCompanies.CommandType = CommandType.StoredProcedure

            Dim daBrokerCompanies As SqlDataAdapter = New SqlDataAdapter(cmdBrokerCompanies)
            Dim dsBrokerCompanies As DataSet = New DataSet

            conBrokerCompanies.Open()

            daBrokerCompanies.Fill(dsBrokerCompanies, "BrokerCompanies")

            conBrokerCompanies.Close()
            conBrokerCompanies.Dispose()

            Return dsBrokerCompanies