I have a form where a user has to select 3 unique items (from a list of about 12 items). I am using 3 combo boxes to capture the 3 selections. I can get the drop-down list to populate correctly from a query I built. However, I would like to limit the list to only the items that have not been selected. In other words, once a user selects an item it is no longer available as an option for the other 2 combo boxes. Any ideas on how to accomplish this?