SETOBJNM.XLA is a Microsoft Excel add-in for renaming 
controls and other graphic objects. Selecting a control on
a dialogsheet and pressing the button on the toolbar 
installed by SETOBJNM brings up a dialog in which you can
edit the object's Name property.

To install the add-in:

Copy SETOBJNM.XLA to the Library directory of Microsoft
Excel. Start Microsoft Excel, pick Tools, Add-ins from the 
menu, and press the Browse button. Locate SETOBJNM.XLA and 
click OK.

Numerous comments on creating the add-in can be found in
the Visual Basic code module of the add-in's source document,
SETOBJNM.XLS.