Build a page to query a database and pull records from it if whatever the user inputs is on record if not in list append to the table

So basically, I have a page I want to add a search and update procedure to if the details are not stored in an access database. So the user searches for Car Lamp, if there are no details in a table called tblItems a modal form pops up to record the details. Details are recorded and the user goes onto complete the rest of the form. There could be a number of records like Car Lamp so I would like to display the records in a field list and let the user select from those details and a facility to edit the contents should that need arise. I have attached two screen shots, [login to view URL] is the current input form as is with the combo box being the item I want to change to a field set with search and update facility. See [login to view URL] for my idea. I appreciate it's in Thai, I can change that no problem. Thanks in Advance Ben