pcEars,
Sure, you should be able to figure something out, make sure to set the combo property Limit to List = No and then look into using the Not In List event to insert the new data into the table that is used in the rowsource of the combo box.
Using an Insert SQL statement should be the easiest for getting the new data in the table. If you need to collect more than one field of information, consider using an InputBox or a custom popup form to gather the rest of the required info for the record before you attempt the Insert.
Don't forget to refresh/requery the rowsource of the combo box after the data has been added to the table, you may need to retrigger the Combo_AfterUpdate event also to insure that the other textboxes still get updated.
That is a very good question
, I havn't messed with a Not In List event in a while. I usually control data that is in a combobox by other means. Have fun with it, make the tools work for you.