I have a form (frmTraveler) in which a user is given a selection of levels for a type of trip from a drop down box (TripLevel). Basically, if a user picks level A, then I would like a value to be written to the corresponding record in another table (tblHotel). The PK is an autonumber (TravelID) and the tables have a one to many relationship. Hope that's enough information for some tips! :)

Check out the AfterUpdate event of the combobox in Access Help.