I have a data input form in which the user selects from combo boxes - for combo 1 - a client name and combo 2 - clients address (both these in a single separate table tbl_Clients. The user either selects an existing client/address or if not in list is asked if he/she want to add the new client/address. If the answer is yes a subform opens for them to add a new client which then is added to the tbl_Clients. When this sub form opens the user inputs 2 fields 1. the clients name and 2. the clients address. All this works fine. Now I could use a second combo box on the main form (basically an orders form) to select the address but what I would like to happen is that when the clients name is selected it automatically looks up the address and fills the clients address field in the main form (which is basically an order form). I want both the client and the address selected to be entered into the order table on which the main form is based. I know someone will say why do you want to do this if you have a table with client and address but please just accept for now that I do. Can someone tell me how I can achieve this or point me to a suitable tutorial. Thanks