Excel 2000

I've created a custom toolbar that I want to have displayed in only one
specific workbook. I copied the toolbar to the workbook, and added the
following routine to the ThisDocument module of the workbook (to ensure that
the toolbar is always visible when the workbook is opened).

Private Sub Workbook_Open()

Application.CommandBars("MyToolbar").Visible = True

End Sub

For some reason, the toolbar is visible in all workbooks. If I close it in
one workbook, it gets closed in all workbooks. If I make it visible in one
workbook, it will be visible in all workbooks, and will even be visible when
there are no workbooks opened.

I know how to do this in Word (add the toolbar to the specific document or
template, remove it from Normal.dot, and use the Word equivalent of the
above code in the Document_Open routine). I've been working on the
assumption that the solution in Excel will be similar to the solution in
Word, but it seems that toolbars are handled a bit differently in Excel.

How can I make the custom toolbar available to only a specific workbook.

--Tom