There may easily be a simpler way to do this but you could try the following pseudocode:

*Combo.LostFocus

lcNewValue = this.text

if lcNewValue not in the list that populates the combo
  insert into the list
  requery the combo
  set the text of the combo to lcNewValue
endif

Cheers,

Andrew

>The problem that comes is that the control source is set to a field name and what the combo box does, it search for that value in the fieldsource depending upon the boundcolumn sett. In case where we make our own entries that are not found in the list, the combo box will set the displayvalue to an empty string and display nothing!
>
>Anurag