Add New Record with a button

[Newbie]

Hello friends

I have a table SUPPLIERS that consist of ID, IDCITY, SUPPLIER and another
called table CITIES which it consists of ID, NAME....

..... and wanted to make a form with a button to add new suppliers.

So that it shows the names to me of the cities and his YOU DO NOT GO, use
the called table CITIES the subject is that

before adding a registry, a city would be due to choose and just soon to be
able to add a new SUPPLIER in the city that corresponds in the table
SUPPLIERS to him. I hope they understand to me and they consider that I am
NASCENT thanks.