Ok. More thinking outside the box. Add an after update event to each of the four text boxes. In the after update event put the same code used in the on load event to lock the text boxes.
So, when the form loads, the text boxes are locked. Click on the command button and you can edit any text box. Click on a tab or enter and the after update event fires and re-locks all the text boxes.
Its a workaround that just may work.
Alan
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