An Excel 2003 workbook is attached for you to try out.
I'm not sure how you are applying 2 combo boxes, so I've
only used one plus a command button to view the worksheet.
See if the code helps you to work out your bugs.
I've included code to clear out and reset the combo,
and hide any sheets that should be hidden,
each time the workbook is opened, in case the user
saved and closed the file before activating Sheet1.
Here is all the code from the attachment.
Add a new module and put this code in it:
Code from the Sheet1 worksheet module:
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