I'm using access 2000 I'm using the combo box to run a querie off of. when I was made the combo box i forgot to add in a null value just in case the user doesn't want anything in that combo box. That is if I can even add a null value I've never tried it.
You can't add a null value, you can simply add a blank value (i.e.: a space). Why do you need a null value for this box, technically any field which has no information in it is a null field.
yea, I'm trying to make a form to use as a search. If someone is filtering by maufacturer finds what they are looking for and then doesn't know the manufacturer of the next thing he's looking for I would need some sort of defult so that the querrie would stop filtering by manfacturer.