I have two combo boxes on a form, one is sourced from a table listing of all states, and the other one is sourced from a query that pulls out the zip codes of the state chosen on the first combo box. I then set a command to rerun that query every time a different state is chosen in the first combo box (at the OnChange event), supposing that the second combo box would only pick up those zip codes that reside within the state chosen. This only works the very first time when the state combo box is populated, but the zip code combo box never update again when I pick a different state. Any ideas?