>A combo box on MyForm2 was built with data from one of the free tables. I >can't find whatever is calling the table. Why else whould an index be needed?

What I would do is look at MyForm2. Open up the data environment, select the table which populates the combo box. Right click on the table to select properties, check the property 'Order'. Make sure it has the proper order, used by the combo, selected.