If hoursValue.ToString <= "0" Then _
      MessageBox.Show("Hours must be greater than zero" & _
      ControlChars.NewLine & "and less than or equal to 168." & _
      ControlChars.NewLine & ControlChars.NewLine & _
      "Do you want to quit?" & MessageBoxIcon.Exclamation & _
      MessageBoxButtons.YesNo & MessageBoxDefaultButton.Button2) _
      Else If hoursValue.ToString > "168" Then _
      MessageBox.Show("Hours must be greater than zero" & _
      ControlChars.NewLine & "and less than or equal to 168." & _
      ControlChars.NewLine & ControlChars.NewLine & _
      "Do you want to quit?" _
      & MessageBoxButtons.YesNo & MessageBoxIcon.Exclamation & _
      MessageBoxDefaultButton.Button2)