Two Questions

Hi there
I have 3 tables Table1 (FriendsA),  Table2(FriendsB), and Table3(Names)
The table FriendsA and FriendsB do have a common colums by reltionship the table Names.
Until here ok.
When I make save the name frrom the same form the colum FriendsA.names and FriendsB.Name are the same. Is there a way to avoid this?

The other question is:
I can add from a combobox the value to a edit.text
How can I add the value from a edit.text to a combobox and when i make a search it should be visible in the combobox.