I want Excel to check the data on every workbook that gets opened. If
certain criteria are met, then some processing will be carried out.

I have set up the event Workbook_Open to run, and this gets triggered
ok. I have a problem with this though. When I open an existing
workbook with Excel not previously running, the open routine gets
triggered twice. I guess that this is once for the PERSONAL.XLS
workbook and then again for the actual workbook. This is a problem,
as when it gets triggered the first time, the PERSONAL.XLS sheet is
hidden so if I try to look at anything on the sheet, the code falls
over.

Any assistance would be appreciate...

Rob