command-prompt output redirection

Public Shared Function launch_hProccess(ByVal myfile As String, Optional ByVal Args As String = Nothing, Optional ByVal wait As Boolean = True, Optional ByVal background As Boolean = True) As Integer
        Try
            cmd_Process = New Process 'new object
            With cmd_Process.StartInfo
                .FileName = myfile
                .Arguments = Args
                .CreateNoWindow = True
                .UseShellExecute = False
                .ErrorDialog = False
                .RedirectStandardOutput = True
                .RedirectStandardError = True
            End With
            cmd_Process.Start()
            launch_hProccess = cmd_Process.Id
            cmd_OutputThread = New Thread(AddressOf cmd_so)
            cmd_OutputThread.IsBackground = background 'default=true
            cmd_OutputThread.Start()
            cmd_ErrorThread = New Thread(AddressOf cmd_eso)
            cmd_ErrorThread.IsBackground = background 'default=true
            cmd_ErrorThread.Start()
            If wait Then cmd_Process.WaitForExit()
        Catch ex As Exception
            log_write(ex.Message & " in launch_hProcess...", txtC.status)
        End Try
    End Function