With that workbook active, right-click the excel LOGO near the file menu,
select View code, enter this:
Private Sub Workbook_Activate()
Application.CommandBars("TheCommandBarNameGoesHere ").Visible = True
End Sub

Private Sub Workbook_Deactivate()
Application.CommandBars("TheCommandBarNameGoesHere ").Visible = False
End Sub

Obviously, substitute the name you gave to the commandbar.
And yes, it'd be ok to use the Attach Toolbars along with the above code.

Bob Umlas
Excel MVP
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"CHICAGOGLASSMAN" wrote in
message ...
HOW DO YOU DISPLAY A CUSTOM TOOLBAR IN ONLY THE WORKBOOK YOU CREATED IT
IN?
ATTACH DOES NOT WORK, THE TOOLBAR IS STILL DISPLAYED IN OTHER WORKBOOKS.