>I built my grid using the grid builder so the control source is a table. However, even tho there is data in the table, when the form is displayed, all the elements of the table show zeros rather than the numeric data in the table. I suspect I am missing one little thing to get this grid to refresh, but what?

Basically, you may fire programmatically:
Grid.RecordSource=Grid.Recordsource
or
Grid.RecordSource="mytable"
to get data to appear in grid. However, after this you may still experience some problems. The unfortunate part of story is that grid's builder is not the best tool to design a grid, i.e. you may find that building grid from scratch will give more reliable way.