Combo Box Not in List function

I have a combo box that lists the option (limited to list) from a table
called tblALLRECCS which has only one field called RECS. How do I write a
code in Not In List event of the combo box so that any new entries that is
not in the list will be added to the RECS in the tblALLRECCS, after prompting
the user with a message box whether he/she wants to add the new item (string)
?

Can some one help.

Thanks in advance
Leo

See:
Adding values to lookup tables
at:
http://allenbrowne.com/ser-27.html

The article explains 4 options for handling this.

--
Allen Browne - Microsoft MVP. Perth, Western Australia
Tips for Access users - http://allenbrowne.com/tips.html
Reply to group, rather than allenbrowne at mvps dot org.

"Leo" wrote in message
...
I have a combo box that lists the option (limited to list) from a table
called tblALLRECCS which has only one field called RECS. How do I write a
code in Not In List event of the combo box so that any new entries that
is
not in the list will be added to the RECS in the tblALLRECCS, after
prompting
the user with a message box whether he/she wants to add the new item
(string)