Excel 2002 Toolbar Hide Custom Button Macro

I have been creating custom buttons for VBA / Macros for Excel 2002 (sorry, don't like or need the ribbon) for quite a while now but I was wondering if there is a way to make a custom button that only shows in specific workbooks instead of every workbook?
I see how you can restrict the macro to just selected workbooks but not the custom button you assign to the macro ~ thanks.
(apologies if this has already been answered somewhere else as I have had no luck with Google so far)

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This works with Excel 2007 :

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Don't forget to UNHIDE the menu bar when you close the workbook or all of your subsequent workbooks will display without the menu bar.

Thanks Logit but none of your code is relevant to my issue except that I now see that I could use separate macros to hide the whole custom toolbar instead of just the custom button in each workbook as a Mickey Mouse workaround.
I didn’t think it would be this difficult to do and to be honest, I didn’t think I would have to resort to different macros for each workbook to do it but maybe that’s’ the price I have to pay for sticking with the old Excel 2002.
Thanks for being the only expert to reply so far.