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Missing Microsoft Excel Object Library

I have Windows XP with Excel 2002. I'm missing the Microsoft Excel Object Library. I cannot run the example vi for writing a table from LabVIEW to Excel because of this and neither can I make new vi's which comunicate with excel. I've search the web for this library, but I didn't find it. Any help would be great.
Thanks
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The Excel Object Library should be on your pc if Excel is correctly installed. What it could be is that the example is referencing a different vrsion of Excel than what's installed on your system. Open the subVI "Open Excel and Make Visable". On the front panel, right click on the automation refnum labeled Excel._Application. Select Select ActiveX Class>Browse. You should get a Select Object From Type Library window. The type library will list all that are installed on your pc. Scroll through the list until you find Microsoft Excel (whatever version) Object Library and then select the application object. This should update the VI to use the object library on your pc.
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I aslo have similiar problem but the excel library already selected. This happen to Worksheet ->Range->Property node->Value when connecting string data into it. Any idea?
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