Registrering a enter command in an edit box

Hi My problem is that I have en editbox, where input is optional. Even though you don’t have to write something special, you still have to give it some kind of input. If I make a blank, deletes it and the press the enter key, everything works fine. If I just hit the enter key without writing and deleting anything, all the triggers that respond, won’t allow me to make changes to the database. Is there anyway around making a dialogbox and keep my edit box. Henrik Andresen