I think I might have overlooked the obvious... If you use a Table for the RecordSource of the Form, and all you want to do is show another field... you simply open the Form in Design View, and add a new TextBox Control to the Form. If the Form uses a Query for the RecordSource, you have to alter the Query to show the new Field and also add the new Control on the Form.
And the second part of the code causes the RecordSource to Refresh itself.
Since I'm not sure what your experience level is.. and exactly what you are attempting to do... it might help if you explain a little more what you want to do.
PaulF