Terry,
If you see this please advise me on this as I have tried your code and have issues I believe that is with the syntax. Perhaps I am doing the wrong thing, however I am using Access 2002 and keep getting error messages. Here it is in a nutshell; tbl A is Instrument and tbl B is ITR_Instrument the common field is Instr_Tag(both) and field to have "X" is E-01 in tbl ITR_Instrument looking for "not null" in field Field Installed of tbl Instrument. I apologize in advance for the trouble, however this is greatly appreciated. Thanks much for your help.