Which version of excel?

I pasted your code in to a sheet module in Excel 2000. Pressing F1
returned the following:

Hidden Objects


Objects that have been hidden in the Microsoft Excel 97 Visual Basic
object model are listed in the following table. These objects are
supported only for backward compatibility; for new code, you should
use the replacement functionality provided in Microsoft Excel 97. To
view hidden objects in the Object Browser, right-click in the Object
Browser window and click Show Hidden Members on the shortcut menu. For
more information about the changes to the Microsoft Excel 97 object
model, see one of the following topics:


Hidden objects

Button, Buttons, CheckBox, CheckBoxes, DialogFrame, DropDown,
DropDowns, EditBox, EditBoxes, GroupBox, GroupBoxes, GroupObject,
GroupObjects, ListBox, ListBoxes, OptionButton, OptionButtons,
ScrollBar, ScrollBars, Spinner, Spinners, TextBox, TextBoxes

Replacement

ActiveX controls