DataCombo to insert in table if not there

[Caro]

Hi, I'm using a data combo drop-down to search an access table for a value which is then entered into the field on my database. It works great as when I type in the first few letters I get to those ones in the table.
What I would like to do is if the user types in a value which doesn't exist, to ask them whether they want to add that value to the table and if yes, create another entry in the table I'm looking up. As well as populating the databae field.
Any ideas? Thanks a lot.

[JHausmann]

Something like this?

if err.num= ## then ' use error that is returned when no record exists
   err.clr
   str= "The value you've entered does not exist, do you wish to add it?"
   rtn = msgbox(str, vbyesno)
   if rtn = vbyes then
      'call subroutine to add data into table
       datacontrol.refresh
   end if
end if

[This message has been edited by JHausmann (edited 08-20-1999).]