adding references programmatically

Hi guys!

I have a code on Workbook_Open() event that require Extensibility (see below)
Is there a way to add reference to Extensibility on Workbook_Open() before declaring the VBIDE variables ?
What I mean is that I need to run this code on Workbook_Open()

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before this one (also on Workbook_Open() event):

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thanks a lot Leith Ross ! someday I'll have to check this 'late binding' everybody talks about....
Meanwhile... I found a way to solve the problem:
I save the new files using Worksheets("name").Copy
That way excel creates a new file that becomes the activeworkbook. So right there I inserted the

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so the new file comes with added reference.
That way the VBIDE works just fine.
But thanks again for your time.