I can't seem manipulate ActiveX controls on sheets from public VB code.

This code works:
Debug.Print ThisWorkbook.Worksheets("Sheet1").OLEObjects("Comb oBox1").Name

It returns the name of an ActiveX combo box... But, I can't use, for
instance, .AddItem instead of .Name.

Maybe the problem is that the properties and methods for MSXL's ActiveX
controls on sheets are different from the properties and methods used to
manipulate the same controls on forms? If that is the case, I can't find a
list of properties and methods :(

If someone could point me in the right direction, I would appreciate it!

Thanks everyone.
-Mike